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January 1st, 2015
Forum member K.W., aka ‘CigarCop’, has spotlighted his handsome long-range F-Class and Bench Rifle in our Forum’s Show Off Your Bat! thread. This is built with a BAT Multi-Flat action, Brux barrel, and a fiberglass McMillan F-Class stock. As you can see, it’s one handsome rifle. Be sure to click the image below to see the much more impressive wide-screen image!
The smithing was done by Bob Green and CigarCop was full of praise for Bob’s work: “I can’t really say enough about Bob Green, his attention to every detail and his ability to build an awesome shooting rifle… but once again he turned a pile of parts into a masterpiece! This irf was built on a Bat MB Multi-flat in .284 Win with a Brux 1:8.5″ twist barrel. It’s almost identical to my 6.5x47L that [Bob] also built. Once again, thanks Bob!”
Bob Green told us: “There was nothing really unusual about this build — this is the quality we try to maintain on all our guns. The barrel was chambered with the client’s reamer to a min-spec SAAMI .284 Win. The Multi-Flat BAT is pillar-bedded and bolted in, with no extra weight added to the stock. CigarCop provided the nice metal spacers on the buttstock and I polished them up. The finish is plain black but it looks good.”
Based in York, Pennsylvania, Bob Green is one of AccurateShooter.com’s recommended gunsmiths. To learn more about his Bob’s work visit GreensRifles.com, email Bob [at] Greensrifles.com, or call (717) 792-1069.
December 30th, 2014
We can predict, with some certainty, how long a light bulb will last (in use), or a shingle roof, or even a nuclear reactor. But how about barrels? Is there a way to reliably estimate barrel life based on known characteristics? This article explains one effort to quantify barrel life…
 How long will a barrel last before the accuracy “goes south”? There are so many variables involved (powder type, bore diameter, bullet coatings etc.) that it’s hard to predict. You might say “Well, my buddy has a .243 and he got 1500 rounds before the throat was shot out” — those kind of comparisons can be useful, but they’re not very scientific, and they won’t help much if you’ve got a gun in a new chambering (such as the 6.5×47) for which long-term test results are lacking.
Is there a more reliable way to predict barrel life — one that will work for a broad range of calibers? Well, Forum member MikeCr has developed an Excel spreadsheet that accounts for a number of variables, and gives a pretty good estimate of useful barrel life, whether you’re shooting a .223 Rem or a 338 Lapua Magnum. Mike’s program predicts barrel life using five variables: 1) Bullet Diameter; 2) Powder Charge weight; 3) Powder Heat Potential (KJ/kg); 4) Pressure (in psi); and 5) Bullet Coating (yes/no). Mike provides a table with Heat Potential ratings for most popular powder types. The user needs to know the pressure of his load. This can be estimated with QuickLOAD.
You can download the lastest version of Mike’s spreadsheet below. You’ll need Excel or an Excel viewer to open the file.
Click to Download Spreadsheet: Barrel Life Spreadsheet (Latest Version)
Shown below is Mike’s Spreadsheet, with variables for a 6BR shooting 105gr “naked” bullets with 30.3 grains of Hodgdon Varget powder. The formula predicts 2401 rounds of barrel life. That corresponds pretty well to what we’d expect for a 6BR — about 2500 rounds.
 
Mike observes: “There has been a lot of discussion lately related to cartridge design and resulting barrel life. This is a really important factor to consider amongst a myriad of choices. Barrel life is controversial, and subjective. There are no clear-cut standards for comparison. But a few years ago, I put together a spreadsheet based on Bart Bobbit’s rule of thumb. It worked pretty good, only occasionally failing some tests when validated against posted barrel lives.
According to Ken Howell, I had to account for pressure. And Henry Child’s powder temperature testing provided another piece needed. So, I’ve tweaked it here and there to pass more tests. From 223 Rem to 300 UltraMagnum. Another element added, but turned off, is shot interval. I would need way more tests to lock in on this. But everyone knows, the faster you shoot, the worse the barrel life.
Anyway, another factor hard to define is ‘accurate’ barrel life. This cannot be quantified without standards. Barrels are replaced when expectations are no longer met. I feel that a [barrel] passes peak potential in a finite period due to throat erosion. But that don’t mean it’s toast, if it still shoots well enough. It’s just as likely that many of us never see that peak potential anyway. It’s a slippery thing. Point-blank BR competitors will toss a barrel when it leaves the 1s. I could get another 4000 rounds from it, and be content with its performance, I’m sure.”
NOTE: Mike says: “This spreadsheet may show a lower barrel life than you prefer. But it pretty well spotlights cartridges to stay away from if you plan much time at the range or in dog town.”
Editor’s Comment: Mike’s spreadsheet is a helpful tool, but it is NOT a definitive “take-it-to-the-bank” indicator of barrel life. Mike cautions that predicting barrel life involves so many different factors (including how hot the barrel is run), that the task is a bit like predicting tread life on car tires. Still, the spreadsheet is very helpful. It can certainly warn us that some chamberings (such as the 6-284) are likely to be barrel burners. That can help you make a smart decision when choosing a chambering for your next rifle.
December 28th, 2014
This video shows the process of single-point, cut-rifled barrel-making by one of the world’s best barrel manufacturers. See Krieger barrels being made, start to finish. Krieger cut-rifled barrels have set numerous world records and are favored by many top shooters. The video show the huge, complex machines used — bore-drilling equipment and hydraulic riflers. You can also see how barrels are contoured, polished, and inspected.
For anyone interested in accurate rifles, this is absolutely a “must-watch” video. Watch blanks being cryogenically treated, then drilled and lathe-turned. Next comes the big stuff — the massive rifling machines that single-point-cut the rifling in a precise, time-consuming process. Following that you can see barrels being contoured, polished, and inspected (with air gauge and bore-scope). There is even a sequence showing chambers being cut.
Here is a time-line of the important barrel-making processes shown in the video. You may want to use the “Pause” button, or repeat some segments to get a better look at particular operations. The numbers on the left represent playback minutes and seconds.
Krieger Barrel-Making Processes Shown in Video:
00:24 – Cryogenic treatment of steel blanks
00:38 – Pre-contour Barrels on CNC lathe
01:14 – Drilling Barrels
01:28 – Finish Turning on CNC lathe
01:40 – Reaming
01:50 – Cut Rifling
02:12 – Hand Lapping
02:25 – Cut Rifling
02:40 – Finish Lapping
02:55 – Outside Contour Inspection
03:10 – Engraving
03:22 – Polish
03:50 – Fluting
03:56 – Chambering
04:16 – Final Inspection
December 25th, 2014
One of the most popular features of our Shooters’ Forum is the Official ‘Pride & Joy’ Rifle thread. There you’ll find dozens of interesting rifles, with photos and descriptions supplied by proud owners. Today we’re spotlighting one of the more interesting ‘Pride & Joy’ rifles unveiled this year, a Mosin Nagant “senior citizen”. This 72-year-old Russian bolt gun is not like any Mosin Nagant you’ve ever seen before. It has been brought into the 21st Century with a handsome target stock and some first-class upgrades, including Lothar Walther barrel and Timney trigger. Here’s a look at a very nice Russian rifle, belonging to Forum member Ben C. (aka “Grimstod”):
CLICK TO See Full-Screen Photo:
Video Shows Rifle Shooting Sub-Half-MOA from Bipod (in the Snow):
Name of rifle: Smyert Mk3 (Modified Mosin Nagant)
Make: Izhmekh/Izhevsk (“Izzy”) High Wall
Model: 91/30 | Year: 1942
Components and Specifications:
Barrel: Lothar Walther 26″
Contour: 1.18″ straight
Chambering: 7.62x54R, .310 bore
Stock: Bluegrass Tactical (Gen 1 & 2)
Trigger: Timney with Bluegrass trigger shoe
Magazine: Finnish No-Jam magazine |
Scope mount: Rock Solid (looks like an action sleeve)
Scope: SWFA 20x42mm MRAD
Gunsmith: Sheppard
Bolt handle: Rock Solid with Surgeon tactical handle
Bipod: Versa Pod
Total Weight: 18.6 lbs |
Grimstod’s Mosin Nagant Custom Shoots Under 0.5 MOA From Bipod
Even in harsh winter conditions, the rifle shot well. (I guess we should expect that for a Russian gun). The photo below shows a group shot from bipod. (The video shows Grimstod’s snow-bound range session). Grimstod calculated the group at 0.394 MOA measuring from outside edge to edge. Using our On-Target software, which measures center to center of most distant shots, we came up with 0.428 MOA. Still that’s impressive for an ancient action being shot in the dead of winter with snow falling. To learn more about this rifle (and view photos of the build process), visit the SurplusRifleForum.com.
December 24th, 2014
We recently featured the “Hornady Number One”, a showcase rifle featureing a CAD-designed, machine-cut stock. While many viewers liked that one-of-a-kind Hornady rifle, others lamented the absence of hand-shaped curves on the Hornady’s angular stock. So, for fans of curvy, hand-crafted rifles, we’re presenting this homage to a truly great stock-maker, Doan Trevor, an artist in the old style.
Doan Trevor is a master gunsmith and stock-maker who works in the old style. He still hand-crafts stocks from start to finish, and does all the metal-work on the custom rifles he builds. Starting with highly-figured woods, Doan carves and shapes his stocks largely by hand, with meticulous attention to detail. Each rifle he builds is optimized for its intended discipline, and custom-fitted for the customer.
With the help of his talented wife Sue (who does the photography and builds the web pages), Doan has created a wonderful website, DoanTrevor.com, that is a feast for the eyes. You can see beautiful wood-stocked rifles being hand-crafted. Doan also illustrates how he creates custom metal parts, and how he beds barreled actions into the finished stocks.
Set aside a few minutes and visit Doan’s website. Be sure to click on the site’s secondary pages: Rifle Building, Woodworking, and Metalworking. You’ll find dozens of high-quality photos and fascinating information on gun-building.
For more information, visit DoanTrevor.com, or call (505) 890-0368, 10am-5pm M-F.
Doan Trevor RifleBuilding
4119 Lanceleaf Ct NW
Albuquerque, NM 87114
505-890-0368
December 22nd, 2014
Hornady Manufacturing has created its first-ever rifle. Well, kind of, sort of, maybe…. In actuality, Hornady hired Bill Wiseman & Company to craft the barrel and action and Hornady commissioned Lucid Solutions (Clem Boyd) to build the stock. But the Hornady name IS now engraved on the side of a rifle receiver and that does represent a genuine first. This one-of-a-kind rifle, serial number “H-001″, is a bolt-action hunter, chambered for the .300 RCM cartridge. The historic “Hornady Number One” rifle has two (2) stocks — a highly figured walnut stock plus a second camo-pattern Hogue synthetic stock. So this rifle is not just a safe queen — it was designed to work in the field as well.
This “Hornady Number One” rifle was commissioned as the featured 2015 SHOT Show Gun. It will be displayed in Las Vegas and auctioned on Gunbroker.com. As of December 22, the bid price was already over $14,525 with 45 bidders. The action and bottom metal is elaborately engraved by Baron Engraving of Trumbull, Connecticut. “We’ve had the privilege of designing and engraving more than a dozen SHOT Show rifles, shotguns, handguns and knives but it’s a unique privilege to be asked to help craft the Hornady Number One”, said David Baron.
Not Just a Beauty Queen, This Rifle Can Shoot
Bill Wiseman & Company, of College Station, Texas crafted the barrel and action for this special rifle. This outfit is the leading producer of test receivers/barrels for the firearms industry. About the Hornady project gun, Bill Wiseman commented: “Our Wiseman barrels have earned a bit of a reputation for accuracy. Now I guess there will be at least one other rifle out there as accurate as our Texas Safari rifles.” The 24-inch blued barrel is fluted and fitted with a muzzle brake. Thus far, the gun has shown impressive accuracy. Three test-firings of the “Hornady Number One” using 180-grain SST, 165-grain GMX and 150-grain SST Hornady cartridges produced groups between ¼” and ½” at 100 meters.
About the Stocks
“Hornady Number One” is equipped with two separate custom-fitted stocks, one for shooting and one for display. A very special select American Walnut stock was selected, fitted and checkered by Clem Boyd of Lucid Mfg. Systems & Solutions (Mitchell, SD). Boyd’s challenge was to design a functional walnut wooden stock that would frame the beauty of the Wiseman barreled-action. Several weeks of design went into a Solidworks 3-D CAD model before the group made any CNC machine cuts. The stock was produced from a XXX walnut blank grown in the Great American Heartland and selected for the vertical-line color pattern. The stock shape incorporates the natural hex design of the receiver.
The trademark Hornady name was inlaid into the stock using African Padauk wood wafers. Padauk was also used for red-tone grip cap and butt pad spacers.
Oops. Someone mounted the Leupold scope incorrectly. The diopter marks should be TDC, meaning the scope should be rotated 90° clockwise.
The Lucid stock design repeats the hexagon features in the forearm, allowing a wide forearm floor to aid in bench rest practice. The stock features a distinctive 13.5° linear checkering pattern on the grip and side panels. A custom aluminum bedding block supports the barreled action. Recoil is absorbed through a 1″ black recoil pad. Three swivel studs provide multiple options for carry and tripod use.
Auction Details and Extras
The GunBroker.com auction will conclude at 5:00 pm Eastern Time on Friday, January 23, 2015, the last day of the 2015 SHOT Show. During the Show, the rifle will be displayed at the GunBroker.com booth in a custom glass and walnut display case. In keeping with SHOT Show tradition, this 2015 SHOT Show rifle will be auctioned on GunBroker.com. At its current $14.5K bid price, “Hornady Number One” has a ways to go before it sets a record. The all-time record SHOT Show auction price was $136,014.00 set in 2013. To complement the Hornady package, the gun will be delivered with a case of Hornady .300 RCM ammo, with each box signed by Hornady President, Steve Hornady. In addition, the high bidder will receive a signed Letter of Authenticity from Hornady Manufacturing.
December 22nd, 2014
 Sometimes you’ll get a barrel that doesn’t stabilize bullets the way you’d anticipate, based on the stated (or presumed) twist rate. A barrel might have 1:10″ stamped on the side but it is, in truth, a 1:10.5″ twist or even a 1:9.5″. Cut-rifled barrels, such as Kriegers and Bartleins, normally hold very true to the specified twist rate. With buttoned barrels, due to the nature of the rifling process, there’s a greater chance of a small variation in twist rate. And yes, factory barrels can be slightly out of spec as well.
Before you purchase a bunch of bullets and set off to develop loads it’s wise to determine the true twist rate of your new barrel. Sinclair International, in its Reloading Press Blog provides a simple procedure for determining the actual twist rate of your barrel. Read on to learn how….
How Twist Rate Affects Bullet Stability
Most of you know that the twist of the rifling in the barrel is what puts spin on the bullet. As a bullet is pushed down the barrel and compressed into the rifling, the bullet follows the path or twist of the rifling. The combination of velocity and bullet spin is what stabilizes the bullet. Finding the twist rate for your barrel will help you in selecting appropriate weight bullets for your firearm. Remember, the general rule is that the faster the twist rate for a given caliber, the longer the bullet (of that caliber) you will be able to stabilize. (Generally speaking, a longer bullet will also be a heavier bullet, but the bullet geometry dictates the needed twist rather than the weight per se.)
Determining Barrel Twist Rate Empirically
Twist rate is defined as the distance in inches of barrel that the rifling takes to make one complete revolution. An example would be a 1:10″ twist rate. A 1:10″ barrel has rifling that makes one complete revolution in 10 inches of barrel length. Rifle manufacturers usually publish twist rates for their standard rifle offerings and custom barrels are always ordered by caliber, contour, and twist rate. If you are having a custom barrel chambered you can ask the gunsmith to mark the barrel with the twist rate.
Erik Dahlberg illustration courtesy FireArmsID.com.
Sinclair’s Simple Twist Rate Measurement Method
If are unsure of the twist rate of the barrel, you can measure it yourself in a couple of minutes. You need a good cleaning rod with a rotating handle and a jag with a fairly tight fitting patch. Utilize a rod guide if you are accessing the barrel through the breech or a muzzle guide if you are going to come in from the muzzle end. Make sure the rod rotates freely in the handle under load. Start the patch into the barrel for a few inches and then stop. Put a piece of tape at the back of the rod by the handle (like a flag) or mark the rod in some way. Measure how much of the rod is still protruding from the rod guide. You can either measure from the rod guide or muzzle guide back to the flag or to a spot on the handle. Next, continue to push the rod in until the mark or tape flag has made one complete revolution. Re-measure the amount of rod that is left sticking out of the barrel. Use the same reference marks as you did on the first measurement. Next, subtract this measurement from the first measurement. This number is the twist rate. For example, if the rod has 24 inches remaining at the start and 16 inches remain after making one revolution, you have 8 inches of travel, thus a 1:8 twist barrel.
This rifling illustration was created by Danish graphic artist Erik Dahlberg. It is published here courtesy FireArmsID.com, an excellent website for forensic firearms examiners.
December 17th, 2014
If you do anything on our site today, watch this movie from Beretta, start to finish. Among the scores of videos we have featured in 2014, this movie, entitled “Human Technology”, is certainly a candidate for “Video of the Year”. It’s that good. You’ll see an amazing blend of ultra-modern manufacturing technology along with old-world artisanship — “a mesmerizing meld of the high-tech and the traditional”. (Quoting Daniel Xu, Outdoor Hub.)
“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 will amaze and entertain anyone who loves fine firearms. (Full-screen HD Recommended.)
 Zoom for Best Viewing
We strongly suggest you watch this excellent video in 720p or 1080p High-Definition, Full-Screen Mode. To do this, after starting the video, click the gear icon and select 1080p (or 720p if you have a slower connection). After setting the resolution, click the four-corner box to enter Full-Screen Mode. When you’ve finished watching the movie, click the “Esc” key to return to your normal browser screen. |
December 16th, 2014
Ruger 10/22 fans rejoice. Ruger has just released a $89.95 drop-in trigger upgrade that should fit all 10/22 rifles as well as 22 Charger pistols. The affordable trigger upgrade completely transforms the 10/22. Pull weight is reduced from a hefty 6.5 pounds to 2.5-3.0 pounds, and Ruger claims the new trigger offers a “light, crisp” break with “minimal overtravel and a positive reset.” Packaged as a self-contained module, the new BX Trigger is easy to install (no gunsmithing required).
“We have made continuous improvements to the 10/22 over the years, but the BX-Trigger is an exciting performance advancement,” said Ruger President and COO, Chris Killoy. “The BX-Trigger was designed for easy installation, superior performance, and legendary Ruger reliability.” Rugger will sell the BX-Trigger as a complete “en bloc” unit that will replace the existing trigger assembly. No additional fitting should be required. Simply install the BX-Trigger into your rifle and go shooting.
December 16th, 2014
 Ernie Paull from California was an active competition shooter for many years. However, his eyesight has declined so he has turned his attention to providing components for shooters and gunsmiths. Through his Ernie the Gunsmith website, Paull sells a variety of useful products including gun trigger springs, pillar-bedding kits, Accu-Risers, and pillar installation tools. This Bulletin post focuses on Ernie’s trigger springs. Ernie offers springs for a wide variety of rifles: Browning (A-Bolt, A-Bolt 22), CZ (m452), Kimber, Remington (XR100, XCR, 7, 700, 722, 788, 7600 and more), Ruger (77, 77-22, LC6), Tikka (T-3), Weatherby (MK-V), and Winchester (M-70).
Springs start at just $6.95. Ernie also sells springs for the Rem-compatible Shilen Benchrest trigger, as well as Rem 700 ejector springs and trigger alignment springs. For Rem 700 rifles, Paull makes a spring that fits all Remington M-7 and M-700 triggers including the 2007-vintage X Mark-PRO trigger (but not the newer X Mark-PRO trigger introduced in 2009). Ernie says: “on average, installation of his Model-700 spring will reduce factory triggers’ weight of pull by 1½ to 2½ lbs with no other changes. The exact amount of creep, over-travel, and weight of pull are dependent upon the type and amount of tuning accomplished by your gunsmith.”
 We often hear requests from Tikka T-3 owners asking how they can reduce their trigger pull weight. Paull offers a Tikka T-3 varmint trigger spring which can reduce the pull weight significantly. The photo at left shows the Tikka T-3 trigger assembly.
While there is more to a good trigger job (in most cases) than just a spring swap, you need to have the proper rate spring when adjusting trigger pull weight downwards. NOTE: For safety reasons, we recommend you consult a competent gunsmith before modifying factory triggers. We stress the word competent…
Ernie has observed that some gunsmiths try to lighten trigger pulls by modifying factory springs in questionable ways: “I have worked with gunsmiths in the past who, when the subject turned to trigger springs, preferred to clip them, grind them, heat them, bend them, smash them, or simply back out the weight of pull screw until there was no or almost no pressure on the spring. With any of these methods, you get a spring whose rate is rapidly rising as the trigger is pulled. As the trigger is released, the spring rate rapidly decreases as it approaches full or near-full extension. A more uniform weight of pull will be achieved when the trigger spring is compressed within its normal working range throughout the entire movement of the trigger. In the long run, the benefits of saved time, plus more uniform and reliable results, will more than offset the cost of these [replacement] springs. If you want a lighter trigger pull, you need a lighter trigger spring.”
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