Richard Franklin’s Step-by-Step Guide to Pillar Bedding
The Art of Stress-Free Stock Bedding
by Richard Franklin
Richard Franklin prepared this article for our readers. Richard tells us: “I’m happy to do pillar-bedding work, but this is a job which many shooters can do themselves, with some practice and the right components. I do suggest you practice first on an old ‘beater stock’. When done right, you end up with a perfect fit of receiver to action, with no twisting, stretching, or compression forces being applied to the receiver through mis-alignment. That’s what I mean by ‘stress-free’.”
This article covers all the steps in the process. This bedding operation was shown in detail in a 200-minute DVD, “Stress-Free Pillar Bedding”, in which Richard showed the entire job — from start to finish — and offered many tips to help achieve perfect results. In this article Richard explains how to properly relieve the bedding area, how to make pillars, how to set up the barreled action, and how to test your work to ensure it is truly “stress-free”. In the DVD, Richard does a complete pillar bedding job on both a finished custom stock and a Remington stock.
[Editor’s Note: This article was first published a decade ago. So, some of the listed bedding materials may have been enhanced slightly, or the product names may have changed. But the procedures described by Richard are still valid and still achieve great results.]
Before You Begin — Some Comments About Inletting
Richard told us: “You can’t do a great bedding job unless you start with really good inletting. Unfortunately, many ‘inletted stocks’ really require quite a lot of work to get the inletting right. You cannot inlet a stock 100% correctly just using a stock duplicator. That’s one reason I do bedding jobs only on the stocks I make. If the inletting isn’t right, you can have a myriad of problems–such as the holes for the action bolts being in the wrong place, or the stock not having enough clearance for the barrel or the trigger hanger. So, BEFORE you start your bedding job, make sure the inletting is really right. Don’t assume the inletting is really complete (and correct) just because the manufacturer claims that to be the case. This applies to both wood and fiberglass stocks.”
Pillars For Bedding
The BAT action featured in this article has three pillars, with the middle pillar sitting under the front of the trigger guard, and the third pillar at the rear of the guard. More typical installations will use two pillars. For either system, the installation procedures are the same.
In Photo 1, you will see part A, the bottom part of the front pillar which we call the “escutcheon”. Part B, which is a 1/4″ X 28 action bolt that is slightly longer than part C which is the top part of the front pillar. The two parts of the front pillar were machined as one piece and then the escutcheon was cut off just below the shoulder that is inside. This shoulder is for the head of the action bolt to tighten up against. I’ve found that a two-piece pillar has many advantages, particularly for hunting stocks where the underside of the stock is angled (i.e. not parallel with bore axis). I make the pillars I use, machining them from cut-off stainless barrel stubs.
Part D is a 1/4″ X 28 hex-head bolt with the head turned down to 1/4″ which permits the insertion of a hex-head driver to tighten and remove the bolt. This headless bolt will be inserted in the rear tang hole of the action and part E, the rear pillar will be placed on it.
STEP ONE — Getting Started
Photo 2 shows tape on recoil lug, pillars bolted in place and putty in voids. Release agent is polished to a very thin layer. The top half of the front pillar (part C) is placed on the action receiver ring and the bolt (part B) is inserted thru the pillar and tightened against the action. This bolt must have a tapered head on the underside so that, when it is tightened, it will center the top half of the front pillar around the action bolt hole. (This is also true for the middle pillar if the action has a middle bolt.)
PHOTO 2
The headless bolt is inserted into the rear tang hole of the action and the rear pillar is slipped down on it. You will notice in Photo 3, below, that the pillars have the hole drilled oversize so that a 1/4″ bolt has a little space around it. (I like to drill the pillars with a .260″ bit inside.)
The above scenario is the placement of the pillars prior to applying the bedding compound, which I call “Mud”. Devcon 10110 is my bedding compound of choice (and the only product I use) as the mud must set up as hard as concrete and most other epoxies will not do this. Also Devcon shrinks very little if at all. My comments on other bedding compounds are in the sidebar below.
STEP TWO — Relieving the Stock Before Bedding Relieving the right amount of wood in the area to be bedded–not too much, not too little–is very important to achieving the best results. You need to create some space for the mud to fill around the action, but you don’t want to alter the inletting too much.
PHOTO 3
Photo 3 shows the wood removed from the inside of the stock bedding area. Remove enough wood everywhere except along the top sides of the stock to allow at least 1/8″ to 3/16″ of room for the mud. Remove 1/4″ of wood behind the recoil lug. I like about .012″ clearance on the top inside edges.
NOTE: Leave a small area of original wood just behind the rear tang bolt hole as this wood will determine the elevation of the bedded action in the stock.
Photo 4 shows the tang area of the stock. Note the elevation wood left at tang. Be sure to leave some original wood for the action tang to sit on. This is very important.
STEP THREE — Wrapping Tape on the Barrel Photo 5 shows the barreled action in the vise. It also shows black electrical tape wrapped around the barrel just behind the front of the stock forearm. Wrap enough tape to hold the front of the barreled action at the proper elevation in the stock.
The idea is that the barreled action does not touch anything except the bit of original “elevation” wood left at the rear tang (behind the pillar) and the forearm resting on the electrical tape. This is very important to obtain 100% stress-free bedding. You want the bore of the barrel to be parallel with the top edge of the stock so wrap just the right amount of tape to ensure this. The tape also centers the barrel in the fore-arm. Done right, the barreled action will be contacting just at two points (tape in front, tang in rear) and the barrel’s bore will be parallel with the top of the fore-arm’s sidewalls.
Comments on Alternative Components and Methods
Bedding Compounds
There are at least a dozen popular products used for rifle bedding. At one time or another, Richard has tried most of them. Devcon 10110 “Plastic Steel® Putty” is the only compound he currently uses and the only product he endorses whole-heartedly. “The Devcon 10110 is expensive, but it is the best bedding product I’ve found. First, it sets up extremely hard. That is very important to the performance and longevity of the bedding job. You want it to get it as hard as concrete. You need it really hard so when you tension the action screws it doesn’t squish down or migrate. Some of the brown stuff other folks use is way too soft. Marine Tex is also too soft. Many products will shrink. Any compound that shrinks is useless in my book. Devcon has absolutely near-zero shrinkage. Acra-Glass I keep in my shop, as it is useful for stock repairs. However I would never bed with Acra-Glass.
Devcon also has just the right consistency — about that of peanut butter. So, it is easy to apply but not runny. It stays in place when I turn the stock upside-down. Devcon is also relatively forgiving to mix–the proportions of the two elements are not super-critical like some other products. I know Marine-Tex can give real problems if you don’t use just the right amount of catalyst. Overall, Devcon does everything you need it to do, and does it exceptionally well. Some other smiths think it’s too expensive–and yes I’ll use $10-$15 worth of Devcon in doing a typical bedding job. But I think the customer deserves the best possible, longest-lasting bedding, and that means Devcon. Among the products I’ve used, Bisonite is my second choice, but I think Devcon will last longer.”
Release Compounds
Richard tells us: “People use all sorts of release compounds and I’ve tried many. I strongly prefer Kiwi shoe polish (neutral color). With the Kiwi, I’ve never had an action stick in the stock. It goes on easy, and you can use a paper towel to polish it very thin and that’s a big benefit. If you have a thin layer of release compound the finished bedding is that much closer to the exact dimensions of the action. I’ve heard of guys using PAM spray. I don’t trust that stuff. The Brownells release compound goes on too thick. Car wax is not a great choice either because it can separate and it gets dusty as it dries. Go with the Kiwi stuff–a little can will last for years. But be sure to use the clear (neutral) kind so you don’t stain your stock or action.”
Clamping and Tension Materials
Read a few articles on pillar bedding and you’ll see many different systems for holding the barreled action to the stock when the bedding compound cures. We’ve seen surgical tubing used, or strips of bicycle inner tube. Some writers have even advocated using mechanical clamps (a bad idea). Richard has tried various tensioning set-ups over the years, and electrical tape is his strong recommendation: “First, let me say it’s crazy to use a C-Clamp or something like that. The clamp will cause a point-load where it attaches and that is just the opposite of what you want.”
Richard has tried many materials: “Surgical tubing I’ve found to be cumbersome to use, and it tends to loosen up during the curing time. Same thing with strips of inner tube. That’s bad news because any loosening or stretching will allow the action to shift. It’s absolutely critical that the action not move one bit while the bedding cures. Once you’ve bedded the action if it dries the wrong way you’ve screwed everything up. Using the electrical tape that isn’t an issue. The tape goes on very tight, doesn’t stretch (if you use enough turns) and I have no fears that the action will shift while curing. Just follow my advice and put a strip of paper towel under the electrical tape so you don’t mar the finish of the barrel or stock.”
Contoured vs. Straight (Flat-top) Pillars
Many factory rifles come with contoured (radiused) pillars, and many gunsmiths prefer to use these. The idea is that the contour provides a better fit with the bottom of round actions. Richard has tried contoured pillars and doesn’t recommend them. He explains: “Most of the contoured pillars don’t really match the contour of the action anyway. And every action is slightly different. Even some of the most favored custom actions aren’t exactly the same from one unit to another. What happens when the contour or curve of the pillar is too narrow is that the action touches just the extended top edges of the pillar (left and right of center). That is not as solid as when the action contacts the center of the pillar where the action screw runs. (And those sharp sides of curved pillars tend to point-load and dig into your action.) Also I feel you get a better match of the Devcon to the action with flat-top pillars. What you want is the bedding compound to cradle the action all the way around. I’ve found this works best with flat-top pillars and a very strong, hard compound like Devcon that doesn’t squish down or shrink.”
STEP FOUR–Applying Release Agent and Plumbers Putty
Failure to apply release agent (and putty) properly is a recipe for disaster. One of the most common mistakes novices make when doing bedding jobs is locking in the action. This happens by not covering enough of the action with release agent, not taping off the lug correctly, and not adding putty to plug any slots or spaces into which the mud can migrate. Remember, you are doing a bedding job, not a glue-in job! When you’ve completed the process, you want to be able to pop the action loose without difficulty.
PHOTO 6 — Showing putty and release agent before polishing, tape on lug.
First, remove the trigger, bolt release and spring, and anything else from the bottom of the action. Then, clean the action and recoil lug area with brake cleaner or parts degreaser. Apply plumbers’ putty to any hole or crevice that you don’t want the mud to get into. Wrap two layers of masking tape on the outside edges of the lug and trim with a razor blade. Do not apply tape to the front or back of the lug. (Apply tape to the front of the lug only if you do not have a way to remove the hardened mud). Let this tape go right around to the top of the action. Wipe the putty smooth with the brake parts cleaner. I highly recommend neutral Kiwi shoe polish as release agent. Apply liberally to the entire action using a Q-tip to get in around the lug (including front and rear of lug), bolt handle slot and loading port edges. Let the shoe polish dry for 10 minutes and then use a paper towel and buff and polish the release agent as thin as possible. You want any release agent to be as thin as possible so as to let the action set as close as possible to your bedding. You also want to apply release agent to the rear (headless) bolt.
STEP FIVE — Installing the Pillars
Now is the time to place the pillars. Screw the top half of the front pillar and middle pillar (if the action has a middle bolt) to the action with the tapered head bolt. Screw in the headless bolt and slip the pillar down around it. Apply release agent to the area of the guard around the rear bolt hole (and to the rear headless bolt). Apply top and bottom and from the inside out. We don’t want the guard stuck to the bedding. (This guard sits on the bolt head that is secures the middle pillar to the action. We need the guard in place to align the action in the stock.)
Install the trigger guard back in place on the stock as the guard is used to align the barreled action in the stock. Now is the time to make a trial run to ensure that everything fits properly. Slip the upside-down stock down over the pillars with the headless bolt coming up through the rear bolt hole in the guard. See Photo 7. Ensure that the stock is resting on two spots only–the tape you’ve wrapped around the barrel, and the little bit of wood you left behind the tang bolt. Ensure there is room everywhere around the action to accept the mud. The barreled action cannot be touching anywhere except the tape and the tang. Not even on the top edges of the stock.
STEP SIX — Applying the Mud
Mix up a generous portion of the Devcon 10110 Mud and apply to the pillars as shown in Photo 8. Do not get mud on top of the bolt head and front pillar(s). Do apply a little mud on top of the rear pillar and if a little gets on the headless bolt that is OK as you should have applied release agent to this bolt. This will properly bed the guard to the rear pillar. The front bolt that holds the front pillar need not have release agent applied to it. Note, as shown in Photo 8, each pillar has a bolt inserted.
PHOTO 8 — Showing mud on the pillars.
You cannot use too much mud as the hydraulic action of pressing the stock down on the barreled action is going to squeeze the mud everywhere it need to go and the excess will be forced out (falling on the floor for you to step in).
PHOTO 9 — Showing mud applied to stock.
Now apply the mud very generously to the stock as shown in Photo 9 above. If I am not bedding any portion of the barrel shank I will only apply a little mud behind the recoil lug area.
STEP SEVEN — Assembly and Compression
Now slip the upside-down stock down over the pillars as you did in the trial run. Ensure the stock is bottomed-out on the tape at the front end. Squeeze slowly, pressing the rear of the stock down and squeeze out the excess mud. After pressing the stock down, the action area should appear as in Photo 10. During the compression stage, stop a few times and use Q-tips to clean off the excess mud that is squeezing out between action and stock.
PHOTO 10 — Rifle right side up, with the mud squeezed out.
Cut a piece of paper towel about two inches wide by the length of the towel. Lay this on the stock 1.5″ in front of the action. Wrap black electrical tape around the stock and barrel, running the tape over the strip of paper towel. (The towel is to protect the stock finish.) Squeeze the stock and action together while taking wraps with the tape. If you have a skinny, pencil-thin barrel don’t apply too much pressure with the tape as the weak barrel can be curved slightly. That can cause the barrel to touch the stock when everything is done (not good). If you have a big, fat barrel don’t worry about deflection. With a heavy contour tube, whatever bend you put in the barrel will spring back when the tape is removed.
STEP EIGHT — Mud Removal and Curing Time
Using Q-tips, clean up very thoroughly around the front pillar and the bolt head. You need to be able to unscrew the bolt to separate the stock from the rifle and you do not want the bedding protruding above the pillar. (The escutcheon still has to have room to fit in there without touching the end of the pillar.) Before turning the rifle right-side-up, reach under with a few Q-tips and clean off the mud hanging there as it may get inside the action.
Turn the rifle right side up in the vise and, using lots of Q-tips, clean all of the mud off of everything. Remove the excess mud every place you can see it. Use a paper towel to wipe the stock as there could be some invisible mud hiding somewhere on the stock or action. After using Q-tips, I sometimes use Butch’s Bore Shine solvent. It does a good job of removing the mud residue (other solvents with ammonia would work well also).
When you’ve cleaned off all the excess mud. It’s time to let the bedding cure. Lie the rifle upside down with the weight on the rear of the action and about where the tape is on the barrel. Let the gun sit for about 8 to 10 hours or overnight. IMPORTANT, you should remove ALL the excess mud around the action before you let the rifle cure for this time period. Photo 11 shows the rifle upside down, but you want to have the excess mud cleaned off before curing.
PHOTO 11 — Position for curing the mud–but excess should be removed first.
IMPORTANT: Avoiding Mechanical Lock During Bedding
One major problem that can arise when novices bed their own stocks is mechanical lock. This occurs when some part of the action or barrel is trapped below the bedding. Effectively, the barreled action becomes anchored in the stock and can be very difficult to remove. Richard says avoiding mechanical lock is not that difficult, but you must be careful: “Locks usually occur because the bedding is applied too far up. Never, and I repeat, never, bed above the centerline of the action (bore axis), or the widest point of the action (whichever is lower). You need to leave the edge of the bedding at least 1/16″ below the centerline of the action and centerline of the bore axis. I normally leave about 1/8th of vertical clearance. If the widest point of the action is BELOW the bore axis, you have to keep the bedding below that. The other thing to watch out for are projections and holes in the sides of the action. All holes must be filled with plumbers’ putty. All projections–anything that sticks out–need to be removed. If some little part or fixture sticks out, even if you tape it over, and it is below the top of the bedding, it can lock the action in.”
STEP NINE — Popping the Barreled Action Loose
After the required curing time, you need to remove the barreled action to check the beading and fit the pillar escutcheons. If you cleaned away all the excess mud and there are no mechanical locks in the bedding, it should not be difficult to pop the stock loose. You can see how this is done in the short Video Clip from my DVD (Right-Click and “Save As” to download). Here is the procedure.
After the mud has set up and hardened, clamp the barrel in a vise with the gun upside down. The vise should camp just ahead of the forearm. Remove the bolt in the front pillar (and middle pillar) and the headless bolt. Remove the trigger guard.
With the left hand, apply upward pressure to the forearm and then with the right hand slap upward on the forearm. You will hear a crack like you might have busted the stock. Not to worry, that is just the bedding popping free. Now wiggle the stock up off the recoil lug as it is the only thing holding the stock down. [Editors Note: Here’s an older video clip that shows Richard “popping” the stock loose from the barreled action. CLICK HERE to download a 6 Meg Windows media file, or click these links for MPEG (2.3 megs), and Real Media (2.3 megs) versions.]
Remove the tape from the barrel and recoil lug and clean up the putty. Wipe the action down with brake parts cleaner. On the stock, remove the squeezed mud that went into the trigger and bolt release area. Relieve the lug area on both sides and the front. Lay the stock back on the barreled action. Be sure to check under the trigger guard to see if any cleanup of mud is required there. Then re-install the guard and insert the rear action bolt just snug (not tight).
STEP TEN — Installing the Pillar Escutcheons
Pillar escutcheons are a nice extra feature I add to my custom rifles. These are stainless, made from barrel stubs. The two-part front pillar is originally machined as one piece. I believe front pillars with the escutcheons (or outer ring) offer advantages over conventional pillars in terms of strength and alignment.
Before you actually install the escutcheons, you need to do some fit testing. Have a trial run at setting the front bolt to the proper length by placing the escutcheon in the hole and screwing in the bolt. Loosen off the back bolt to see if the bolt that is thru the escutcheon is holding the stock firmly in place. Retighten the rear bolt a wee bit.
Apply release agent to the front bolt, being careful to not get it on the escutcheon. Insert an Allen wrench into the head of the bolt so you can hold it easily. Slip the escutcheon over the bolt. Apply mud to the escutcheon and around the bolt. Photo 12 shows how much mud to put on the escutcheon. You want enough so when you tighten the bolt it will force the mud everywhere it needs to go, even though a bit will be squeezed in around the bolt. Photo 13 shows how the escutcheon should look installed, with the bolt tightened. Photo 14 (below right) shows the escutcheon after the mud has been removed–be sure to remove the excess while the Devcon is still soft.
PHOTOS 13 and 14 — Showing escutcheon before (left) and after mud clean-up (right).
Clean up the excess mud with Q-tips and paper towels. You need to do this before the mud hardens. I used Butch’s Bore Shine as a solvent, once I have removed the excess mud with Q-tips and towels. When the escutcheons are cleaned up, you’ve finished working with the mud. Now let the stock lay for another 8 hours or so to allow the escutcheons to become.
After the mud has hardened around the escutcheon clamp the rifle back in the vise. Remove the back tang bolt first then the front bolt that is through the escutcheon. The bolt will be tight in the hole and sometimes may need to be punched out with a punch unless it has threads right to the head in which case it will screw out. Go in the hole with a .260” bit and clean the mud out of the front pillar. Let the bedding harden for a day or two and then torque the bolts with about 35 inch-lbs of torque on the front bolt and maybe 25 on the tang bolt.
The finished result is an even coat of Devcon with no voids, air pockets, fissures, and perfect stress-free support for the action, as shown in Photo 15.
Top to bottom: Remington firing pin assembly with ISS, Tubb SpeedLock alloy-composite system without ISS (current versions have dual, opposite-wound springs), and Remington short action firing pin assembly without ISS.
The U.S. Army Marksmanship Unit regularly publishes technical articles on the USAMU Facebook page. One informative USAMU article covered mechanical issues and related ignition irregularities that can cause vertical fliers even with good ammunition in an otherwise excellent rifle. We highly recommend you read this article, which offers some important tech tips.
Vertical Dispersion: Mechanical/Ignition Issues?
Poor or inconsistent ignition has long been known to be one of the “usual suspects” when one encounters vertical fliers that just shouldn’t be there. By having a sense of some of the basic principles involved, and a few basic areas to check, the shooter may avoid colsiderable frustration, not to mention time, expensive loading components and barrel wear.
Is your well-built rifle of high-quality components plagued with vertical fliers across more than 1-3 handload combinations? Consider the bedding, crown and scope/sight mounts. Are they correct? If so, then you might check for ignition issues before boldly undertaking an extensive, expensive, and quite possibly fruitless quest for the “magic handload”.
SEEING IS BELIEVING: While the author had been aware for many years that poor ignition should be considered and ruled out when dealing with vertical fliers in an otherwise-excellent rifle, actually seeing the problem and its almost instantaneous cure really drove the lesson home.
He was working with a “dot” rifle – a .22 LR match rifle that really stacked bullets into little piles at 50 yards and beyond. With one lot of ELEY Tenex, it produced consistent “bughole” groups at 50, but with another, selected lot of Tenex, similar groups were regularly ruined by single, vertical fliers that did not appear in other rifles. Rather than spending days burning up expensive, select ammunition looking for “magic lots”, he contacted a well-respected rimfire gunsmith and explained the situation.
Without so much as batting an eye, the highly-experienced ‘smith tore into the rifle’s action, and quickly found the cause(s) of the problem. He discovered a demonstrably weak firing pin spring, plus a chip out of the face of the firing pin where it contacted the cartridge rim.
After replacing and tuning the offending parts, the rifle immediately began shooting tiny, bughole groups with the previously “unacceptable” lot of Tenex. Centerfire rifles can also benefit from ensuring positive, consistent ignition. A wise riflesmith is literally worth his weight in gold!
So, what are some issues we as shooters can inspect in our rifles to help determine if ignition woes could be part of our problem? At the club level, ask yourself if that “experienced” Remington, Winchester 70, or even Springfield-based match bolt gun you’re using is still running its’ original 40-80 year-old factory striker spring? If so, a new replacement is cheap insurance against current or future problems. (And BTW, it might be best to stick to the normal, factory-spec spring weight. A super-powerful spring can cause vertical, just as a weak one one can.) Along with that, a routine check for proper firing-pin protrusion is a quick preventive measure that can rule out potential issues.
Other areas to consider are the centering and consistency of the firing pin’s operation in the bolt. Admittedly, with the increasing use of precision-machined custom actions, this is becoming less an issue every day. Below is the firing pin assembly from a custom BAT action:
However, particularly with factory actions, a very quick and easy check is to remove the bolt, let the firing pin go forward, and look at the firing pin tip through the firing pin hole. Is the tip off-center in the hole, and possibly striking it as it moves forward? Is the hole out-of-round or burred from being struck repeatedly? If so, a trip to the riflesmith is likely in order.
Similarly, machining issues in the bolt/firing pin system can lead to rough and erratic firing pin movement, in which the firing pin drags against an internal surface of the bolt. In high-quality rifles these issues are relatively rare, but not unheard-of, and it takes mere minutes to rule them out. It may be worthwhile to remove the cocking piece/firing pin/spring assembly and look for any unusual gouges, dings, peening, burrs or signs of abnormal wear.
This task is especially easy with Winchester 70s, Springfields, and the similar Mauser 98s, involving little more than the push of a button and unscrewing the cocking piece assembly. This is just one of the many reasons these tried-and-true actions have earned such a loyal following in the field, among hunters who must maintain their rifles away from a shop.
Particularly with older rifles, watch for and remove excess grease (or even Cosmoline!) from both the firing pin assembly and inside the bolt. This can help improve firing pin speed and consistency. Other bolt-action designs may need a take-down tool or other measures.
As part of this inspection, AFTER ENSURING THE RIFLE IS UNLOADED, slowly cock the rifle, dry-fire, and repeat several times. Listen carefully near the action for inconsistency in the sounds it generates. Does the striker falling make the same sound each time? Do you hear or feel grinding upon operation? If so, where?
Be sure to check the operation of the cocking piece (bolt shroud), firing pin within the bolt shroud, the cocking piece cam and the rear of the bolt body where the cocking piece cam operates. As with our examination for abnormal wear marks discussed above, look for marks indicating roughness or a possible need for light polishing. Then, clean and lightly grease the bearing surfaces while you’re at it.
Remington 700 bolt shroud and cocking cam
These are relatively easy checks that shooters can undertake to perform a preliminary inspection on their own. Other mechanical issues can also cause ignition issues, chiefly centered around the action of the trigger, sear and sear spring. If these are suspected, a trip to an experienced, qualified riflesmith for diagnosis is recommended. We hope you find this information helpful! Join us again next week, and in the meantime, enjoy the shooting sports safely!
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Jewell triggers are still the most-used triggers on competition benchrest and F-Class rifles and they are also popular for hunting, varmint, and tactical rifles (with or without safeties). While a Jewell trigger can work for years with minimal maintenance, if the trigger becomes gunked up, it may be necessary to disassemble the trigger for a thorough cleaning. Our friends Ed and Steve, aka the 6.5 Guys, have produced a helpful video that shows how to disassemble and then reassemble a Jewell trigger.
Why You May Need to Disassemble Your Jewell Trigger — the 6.5 Guys
Jewell triggers are a popular choice in the sport of long range precision shooting, and like everything else require regular cleaning and maintenance. In most cases they can be cleaned with charcoal lighter fluid or dropped into an ultrasonic cleaner. Should the situation require, they can be completely disassembled according to the Jewell Trigger Manual.
We ran into a situation where we had to dissemble a trigger due to the entrapment of some sticky dirt that couldn’t be removed with an ultrasonic cleaner. Our first step was to find some step-by-step instructions but we couldn’t find anything.
Recognizing that other shooters might be in the same situation we produced a step-by-step guide and video, published in full on 65Guys.com. These instructions will work with a left- or right-handed trigger. In our case we worked with a left-handed BR model trigger with safety and bolt release.
Step-by-Step Instructions are provided on 65Guys.com website. We recommend you read all the instructions carefully before you even think about disassembling your trigger. This video explains the process so you can get a sense of what is involved.
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How is a modern, metal-chassis rifle built? This very cool video from Masterpiece Arms answers that question. The nicely-edited video shows the creation of a Masterpiece Arms tactical rifle from start to finish. All aspects of the manufacturing process are illustrated: 3D CAD modeling, CNC milling of the chassis, barrel threading/contouring, chamber-reaming, barrel lapping, laser engraving, and stock coating. If you love to see machines at work, you will enjoy this video…
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Here’s a really great video about firearms crafting produced by Beretta, a legendary Italian gun-maker founded in 1526 — nearly 500 years ago. This movie, entitled “Human Technology”, is one of most impressive videos we’ve ever featured on this site. It’s that good. You’ll see an amazing blend of modern technology along with old-world artisanship — “a mesmerizing meld of the high-tech and the traditional”. (Daniel Xu, Outdoor Hub.)
Video set to auto-play. Click speaker icon to hear sound.
“Human Technology is a singular and symbolic movie, its cast entirely made up of Beretta workmen, thus illustrating the perfect synthesis between craftsmanship and technology,” Beretta writes. This artistic movie by Ancarani Studio illustrates all the aspects of the manufacturing of a high-end Beretta shotgun. This video is a study in contrast. The movements of robotic assembly machines are juxtaposed with the centuries-old craftsmanship of stock carvers. Beautifully filmed and edited, this video should amaze and entertain anyone who loves fine firearms. (Full-screen HD Recommended.)
Beretta — Incredible history. Beretta was founded in 1526, almost five centuries ago. Remarkably, the enterprise is still owned by the Beretta family.
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Want to see new-born Pandas? No, not the furry kind — rather Stolle Panda actions produced with state-of-the-art CNC machinery. If you’ve ever wondered how precision benchrest, long-range, and tactical rifles are built, check out video from Kelbly’s. You’ll see actions finished, barrels chambered and crowned, pillars installed in stocks, barreled actions bedded, plus a host of other services performed by Kelbly’s gunsmiths and machinists.
If you’re a fan of fine machine-work, this video should be both informative and entertaining. You can see how precision gun work is done with 21st-Century technology. Tip of the hat to Ian Kelbly and crew for producing this excellent video visit to the Kelbly’s production center.
Click Volume Control to Activate Sound for Kelbly’s Video:
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Readers who have just recently discovered the Daily Bulletin may not realize that AccurateShooter.com has hundreds of reference articles in our archives. These authoritative articles are divided into multiple categories, so you can easily view stories by topic (such as competition, tactical, rimfire, optics, shooting skills etc.). One of the most popular categories is our Technical Articles Collection. On a handy index page (with thumbnails for every story), you’ll find over 120 articles covering technical and gunsmithing topics. These articles can help you with major projects (such as stock painting), and they can also help you build more accurate ammo. Here are five popular selections from our Technical Articles archive.
Stress-Free Pillar Bedding. Richard Franklin explains how to do a top-quality bedding job, start to finish.
OnTarget Software Review. Our Editors test free software that measures shot groups with great precision. We explain how to use the program and configure advanced features.
Savage Action Tuning. Top F-TR shooter Stan Pate explains how to enhance the performance of your Savage rifle by optimizing the torque settings of the action screws.
Complete Precision Case Prep. Jake Gottfredson covers the complete case prep process, including brass weight sorting, case trimming, primer pocket uniforming, neck-sizing, and, case-neck turning.
Stock Painting Instructions. Step-by-step guide for stock painting by expert Mike Ricklefs. Mike shows both simple coverage and fancy effects.
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You may have heard the phrase “blueprinting an action”, but do you know what that really means? Do you know what operations are done to an action during the blueprinting process? To help you understand, gunsmith Bill Marr of RifleShooter.com has created a helpful article showing a Rem 700 blueprinting job start to finish. This article spotlights how the procedures can be done with manual tools. Bill, who runs 782 Custom Gunworks Ltd., can also perform many of these operations with modern automated machinery. In fact, Bill has written a follow-up article on Truing a Rem 700 receiver with a Lathe.
Bill explains: “Blue-printing, or truing a rifle action, ensures the receiver face, threads, lugs, bolt lugs, and bolt face are square to the center line of the receiver.” In Bill’s informative article, Bill shows how he blueprints a Remington 700 short action receiver with .308 Win bolt face. He covers the following procedures step by step:
Action Disassembly
Ream Minor Diameter of Receiver Threads
Square the Receiver Lugs
Square the Face of the Receiver
Lap the Bolt Lugs
Square the Bolt Face
We use the bushings to guide the receiver tap. This chases the threads and ensures they are square.
2. Truing the Receiver Face
Using the receiver facing tool, the front of the receiver is trued. The tool is placed over the tap and turned by hand. We used Do Drill to lubricate it.
3. Lapping the Lugs
The bolt lapping tool screws into the front of the action and applies rearward pressure on the bolt face. A little bit of lapping compound is placed on the front of the receiver lugs. The bolt handle is then raised and lowered repeatedly. Note — it is critical that we do not get any lapping compound on any other surfaces.
4. Truing the Bolt Face
On this bolt, the central part of the bolt face was low. After the truing operation, this Rem 700 bolt face is now completely square to the action.
IMPORTANT: Rifleshooter.com states: “This article highlights our project and is presented for information purposes only. This provides an overview of the process and should not be attempted without the guidance and supervision of an experienced gunsmith“.
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Top to bottom: Remington firing pin assembly with ISS, Tubb SpeedLock alloy-composite system without ISS (current versions have dual, opposite-wound springs), and Remington short action firing pin assembly without ISS.
The U.S. Army Marksmanship Unit regularly publishes technical articles on the USAMU Facebook page. One informative USAMU article covered mechanical issues and related ignition irregularities that can cause vertical fliers even with good ammunition in an otherwise excellent rifle. We highly recommend you read this article, which offers some important tech tips.
Vertical Dispersion: Mechanical/Ignition Issues?
Poor or inconsistent ignition has long been known to be one of the “usual suspects” when one encounters vertical fliers that just shouldn’t be there. By having a sense of some of the basic principles involved, and a few basic areas to check, the shooter may avoid colsiderable frustration, not to mention time, expensive loading components and barrel wear.
Is your well-built rifle of high-quality components plagued with vertical fliers across more than 1-3 handload combinations? Consider the bedding, crown and scope/sight mounts. Are they correct? If so, then you might check for ignition issues before boldly undertaking an extensive, expensive, and quite possibly fruitless quest for the “magic handload”.
SEEING IS BELIEVING: While the author had been aware for many years that poor ignition should be considered and ruled out when dealing with vertical fliers in an otherwise-excellent rifle, actually seeing the problem and its almost instantaneous cure really drove the lesson home.
He was working with a “dot” rifle – a .22 LR match rifle that really stacked bullets into little piles at 50 yards and beyond. With one lot of ELEY Tenex, it produced consistent “bughole” groups at 50, but with another, selected lot of Tenex, similar groups were regularly ruined by single, vertical fliers that did not appear in other rifles. Rather than spending days burning up expensive, select ammunition looking for “magic lots”, he contacted a well-respected rimfire gunsmith and explained the situation.
Without so much as batting an eye, the highly-experienced ‘smith tore into the rifle’s action, and quickly found the cause(s) of the problem. He discovered a demonstrably weak firing pin spring, plus a chip out of the face of the firing pin where it contacted the cartridge rim.
After replacing and tuning the offending parts, the rifle immediately began shooting tiny, bughole groups with the previously “unacceptable” lot of Tenex. Centerfire rifles can also benefit from ensuring positive, consistent ignition. A wise riflesmith is literally worth his weight in gold!
So, what are some issues we as shooters can inspect in our rifles to help determine if ignition woes could be part of our problem? At the club level, ask yourself if that “experienced” Remington, Winchester 70, or even Springfield-based match bolt gun you’re using is still running its’ original 40-80 year-old factory striker spring? If so, a new replacement is cheap insurance against current or future problems. (And BTW, it might be best to stick to the normal, factory-spec spring weight. A super-powerful spring can cause vertical, just as a weak one one can.) Along with that, a routine check for proper firing-pin protrusion is a quick preventive measure that can rule out potential issues.
Other areas to consider are the centering and consistency of the firing pin’s operation in the bolt. Admittedly, with the increasing use of precision-machined custom actions, this is becoming less an issue every day. Below is the firing pin assembly from a custom BAT action:
However, particularly with factory actions, a very quick and easy check is to remove the bolt, let the firing pin go forward, and look at the firing pin tip through the firing pin hole. Is the tip off-center in the hole, and possibly striking it as it moves forward? Is the hole out-of-round or burred from being struck repeatedly? If so, a trip to the riflesmith is likely in order.
Similarly, machining issues in the bolt/firing pin system can lead to rough and erratic firing pin movement, in which the firing pin drags against an internal surface of the bolt. In high-quality rifles these issues are relatively rare, but not unheard-of, and it takes mere minutes to rule them out. It may be worthwhile to remove the cocking piece/firing pin/spring assembly and look for any unusual gouges, dings, peening, burrs or signs of abnormal wear.
This task is especially easy with Winchester 70s, Springfields, and the similar Mauser 98s, involving little more than the push of a button and unscrewing the cocking piece assembly. This is just one of the many reasons these tried-and-true actions have earned such a loyal following in the field, among hunters who must maintain their rifles away from a shop.
Particularly with older rifles, watch for and remove excess grease (or even Cosmoline!) from both the firing pin assembly and inside the bolt. This can help improve firing pin speed and consistency. Other bolt-action designs may need a take-down tool or other measures.
As part of this inspection, AFTER ENSURING THE RIFLE IS UNLOADED, slowly cock the rifle, dry-fire, and repeat several times. Listen carefully near the action for inconsistency in the sounds it generates. Does the striker falling make the same sound each time? Do you hear or feel grinding upon operation? If so, where?
Be sure to check the operation of the cocking piece (bolt shroud), firing pin within the bolt shroud, the cocking piece cam and the rear of the bolt body where the cocking piece cam operates. As with our examination for abnormal wear marks discussed above, look for marks indicating roughness or a possible need for light polishing. Then, clean and lightly grease the bearing surfaces while you’re at it.
Remington 700 bolt shroud and cocking cam
These are relatively easy checks that shooters can undertake to perform a preliminary inspection on their own. Other mechanical issues can also cause ignition issues, chiefly centered around the action of the trigger, sear and sear spring. If these are suspected, a trip to an experienced, qualified riflesmith for diagnosis is recommended. We hope you find this information helpful! Join us again next week, and in the meantime, enjoy the shooting sports safely!
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Kevin Muramatsu’s black rifle book, the Gun Digest Guide to Customizing Your AR-15, is a great resource for fans of AR-platform rifles. All the AR options you can imagine are covered: suppressors, premium barrels, adjustable stocks, free-float handguards, ergonomic grips, buffer systems, tactical lights and much more. Those planning an AR rifle build will find application-specific suggestions for 3-Gun, Service Rifle, High Power (Space Gun), Hunting, and Self-Defense use.
Firearms expert Muramatsu offers advice on choosing the right stock/barrel/optics configuration for your particular game. He also discusses the wide variety of options for slings, grips, magazines and other accessories. With over 520 photos, the book includes a large photo gallery of customized ARs, and includes bonus coverage of the FAL and other “tactical” firearms. The Gun Digest Guide to Customizing Your AR-15 is available from Amazon.com (#ad) for $35.95, and a Kindle eBook version is offered for $14.99. The book is also sold by Barnes & Noble, and most other major booksellers.
As an Amazon Associate, this site earns from qualifying purchases.
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They say that a man can never have too much money or too much time. Darrell Jones would add that a man can never have too many BR-based rifles. Darrell had a fleet of BRs, in 22 BR, 6mm BR, 6.5 BR, 7 BR, and 30 BR. But he was intrigued by the potential of a rifle in the .257 caliber. Could it shoot as well as a 6mm BR? Could it challenge the more popular calibers in the highly competitive 600-yard benchrest game? Through careful research and component selection, Darrell created a 25 BR rifle that proves the viability of the 25 BR as a competition round. Pushing 115gr high-BC Berger bullets at 2837 fps, Darrell’s 25 BR “Peppermint” won first place in its very first match.
The Barely Bigger BR — Exploring the .25 Caliber Option
Rifle Report by Darrell Jones
I decided to build a 25 BR after several weeks of deliberation and ruling out a .257 Ackley Improved. Part of my dilemma was that I wanted to shoot F-Class competition at 600 yards, and I was unsure about the accuracy potential of the 25 BR. However, I currently have several BRs chambered in 22 BR, 6BR, 6.5 BR, 7 BR, and 30 BR and they all shoot exceptionally well at 600 yards. This lead me to believe a 25 BR should deliver fine accuracy, just like its other BR siblings. Why wouldn’t a 25 BR shoot accurately provided that I built it with the right components? The feasibility saga began. I began searching diligently for custom 25-caliber bullets. Unfortunately, there are not many 25-caliber custom bullet makers. I actually found only two custom bulletsmiths who produce the 25s. I did look at Fowlers and then looked at Bergers. Both Jeff Fowler and Berger made 110-grain flat-base bullets when I was looking. [Editor — this 110gr bullet is no longer listed by Berger]. The Berger 110gr FB bullets (.414 ballistic coefficient) shot very well out of my 12-twist 25-06 Ackley. However, I wanted to shoot a heavier bullet if possible. Berger makes a 25-caliber 115gr VLD boat-tail with a high ballistic coefficient. This needs a 10-twist barrel.
Panda Action, McMillan Stock, Weaver T-36
As you can see, I went with a Panda polished action and a weighted McMillan BR stock painted metallic silver with red candy cane stripes thus the name “Peppermint”. This gun actually does double duty now as a 25 BR and 6 PPC switch barrel. When I want to run the gun as a 6 PPC for short range, I simply screw on the PPC barrel, then swap in a bolt (fitting the PPC bolt face) from another Panda action I own. That’s one advantage of owning custom Kelbly actions! Don’t even think about exchanging bolts between factory guns. Kelbly rings and a Weaver T-36 fixed-power scope handle the optical duties while a Jewell trigger set at one ounce takes care of the firing mechanism.
Chambering for the .25 Caliber BR Wildcat
I wanted a chamber that would let me shoot both the 110s and the 115s. I took some time surfing the net looking for rental reamers that had suitable throat dimensions. I found that Elk Ridge Reamer Rentals had a 25 BR pilot reamer available. I called and Elk Ridge faxed me a reamer diagram that indicated it was designed to tight SAMMI specs. I asked how often was the reamer used and was told “not very often”.
I did want a minimum no-turn neck optimized for Lapua brass. The drawing indicated that the reamer would cut a .281″ neck and a throat of 1.0315″. This was very close to ideal, though I did have to turn two thousandths off the necks of Lapua 6BR brass after I necked it up. I resized using a .277″ bushing and the loaded rounds came out to be .279″. Realizing that this was in the ball park, I decided to go with the Elk Ridge Reamer and build a 25 BR that could shoot 110gr or 115gr bullets. Now the question was where to get a match-grade 25-caliber barrel. I called quite a few of the custom barrel-makers, including BlackStar Barrels in Texas (no longer operating). I have had wonderful success with the BlackStar barrel on my 6BR “Chantilly” — it delivered great accuracy and impressive velocities. Since the 25 BR was so similar, I went with another BlackStar. I ordered a 10-twist, 6-groove, 1.250″-diameter straight-contour tube.
After chambering, the barrel finished at 1.245″ diameter and 27.5″ inches with an 11° crown. I actually had the throat lengthened to accept both Berger 110gr and 115gr bullets. The bases of the FB 110-grainers sit flush with the neck-shoulder junction, when they are seated .010″ into the lands. With the longer 115gr VLDs, the bottom of the bearing surface (i.e. start of boat-tail) is just about even with the neck-shoulder junction.
Accurate Load Development
The barrel broke in easily with just 10 shots, using a “shoot one and clean” process. The load I started with was 31.5 grains of Varget with CCI 450 primers. The Berger 110s and Berger 115s had the same Point of Impact (POI) at 100 yards. However, the 115s impacted two inches higher at 600 yards with the same load. That shows the benefits of a higher BC. Pushed by the CCI 450s and 31.5 grains of Varget, the 115-grainers were running about 2837 FPS. I boosted the load up to 32.0 grains but I noticed primer cratering, so I backed off, settling on 31.5 grains for the 115gr Berger VLD.
Peppermint Wins at 600 Yards
For her debut in competition, I took “Peppermint” to our local 600 yard F-class match. Shooting the Berger 115s with 31.5 grains Varget, she won with a perfect score of 200 with 14 Xs. At my club, we use a SR3 target. The X-Ring measures 3″ in diameter and the 10-Ring measures 7″. At the match there were some very good shooters with top-flight custom rifles in accurate calibers such as 6.5-284 and 22 Dasher. I was very fortunate to come out on top, but I give the credit to Peppermint’s good bench manners and outstanding accuracy.
As you can see from the target, “Peppermint” is a very accurate rifle that has proven herself in competition. It takes a good gun to finish “on top” in her very first match. So far, I’m very happy with the project, and more than satisfied with the accuracy of the 25 BR. This is definitely a worthy cartridge for Egg Shoots, 500m varmint matches, and the 600-yard F-Class game.
BR-Based Cartridge Comparison
CALIBER
22 BR
6mm BR
25 BR
6.5 BR
7 BR
30 BR
Bullet
80gr SMK
107gr SMK
115gr Berger
107gr SMK
130gr SMK
118gr BIB
BC
.420
.527
.522
.420
.391
na
Load Grains
31.0 H4350
30.0 Varget
31.5 Varget
32.0 Varget
34.0 AA2460
34.0 H4198
Barrel Length
27″
27″
27.5″
27.5″
28″
24″
Velocity
3100 fps
2880 fps
2837 fps
2851 fps
2719 fps
2970 fps
Comparing the BR-Based Variants
Now that I have several calibers in the BR cartridge family, (22 BR, 6mm BR, 6.5 BR, 7 BR, and a 30 BR), it is my humble opinion that they each have their own place. A varmint hunter’s dream, the 22 BR can push a bullet faster and more accurately than the 22-250. With an 8-Twist barrel, the 22 BR can send an 80gr SMK to 600 yards with extreme accuracy.
The 6 BR can do it all. The 6mm caliber offers a wide variety of quality bullets suitable for any shooting situation. All the major custom barrel makers produce outstanding 6mm barrels in a full range of twists. Moreover, since the 6 BR cartridge is so popular, there is a great store of knowledge about reloading for the 6 BR. It is easy to find a load that will shoot superbly in any bullet weight.
The 25 BR has proved to be easily tuneable, proficient and not fickle. You can obtain extreme accuracy without great effort in load development. The 115gr Berger offers a good high-BC projectile for this caliber, making the 25 BR a viable alternative to the 6 BR. As I’ve shown, it is competitive with a 6 BR in head to head competition.
Compared to the 25 BR, the 6.5 BR has a small edge in ballistics. However, there are not many light bullet choices available, especially from custom makers. The 123gr Lapua Scenar is an excellent bullet with a .547 stated BC, but it may be a bit heavy for the case capacity.
The 7 BR was designed for silhouette shooting, and it excels at that task. The 7 BR can push a 130 grain bullet fast enough to knock over the steel silhouettes at 500 meters with real consistency.
The 30 BR is nothing less than outstanding. The 30 BR is now the dominant cartridge on the benchrest Score-shooting circuit. It is also highly accurate for group shooting at 200 yards and very capable of winning a 600-yard F-Class match. Barrel life of over 6,000 rounds is realistic.
I like all the “flavors” of BR derived from the 6mm BR Norma case. However, if I could only have one BR in my safe, give me my 8-Twist, 6 BR “Chantilly” and I will be a happy camper. The final point I would make is if a cartridge is stamped BR on the case, it will shoot extremely accurately if you can.
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Jewell triggers are still the most-used triggers on competition benchrest and F-Class rifles and they are also popular for hunting, varmint, and tactical rifles (with or without safeties). While a Jewell trigger can work for years with minimal maintenance, if the trigger becomes gunked up, it may be necessary to disassemble the trigger for a thorough cleaning. Our friends Ed and Steve, aka the 6.5 Guys, have produced a helpful video that shows how to disassemble and then reassemble a Jewell trigger.
Why You May Need to Disassemble Your Jewell Trigger — the 6.5 Guys
Jewell triggers are a popular choice in the sport of long range precision shooting, and like everything else require regular cleaning and maintenance. In most cases they can be cleaned with charcoal lighter fluid or dropped into an ultrasonic cleaner. Should the situation require, they can be completely disassembled according to the Jewell Trigger Manual.
We ran into a situation where we had to dissemble a trigger due to the entrapment of some sticky dirt that couldn’t be removed with an ultrasonic cleaner. Our first step was to find some step-by-step instructions but we couldn’t find anything.
Recognizing that other shooters might be in the same situation we produced a step-by-step guide and video, published in full on 65Guys.com. These instructions will work with a left- or right-handed trigger. In our case we worked with a left-handed BR model trigger with safety and bolt release.
Step-by-Step Instructions are provided on 65Guys.com website. We recommend you read all the instructions carefully before you even think about disassembling your trigger. This video explains the process so you can get a sense of what is involved.
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