Editor: Many new barrels will deliver higher velocities with the same load after 100-150 rounds through the bore. The exact reasons for this speed-up are not 100% certain, and velocity increases (if any) will vary from one barrel to the next. But this “speeding up” phenomenon is common, so be prepared if this happens with your next barrel. If you do experience a significant velocity increase you should probably re-tune your load AFTER the velocity stabilizes at the higher level.
From the Sierra Bullets Blog Article by Mark Walker, Sierra New Product Development Director
In a previous post, I discussed a couple of methods to tune a load to your barrel to help achieve the best accuracy possible. People most often work on load tuning if they get a new rifle or have a different barrel installed. In both instances, the barrel is new and has not been fired very much. According to most competitive shooters, this is the most accurate your barrel will ever be, so getting it tuned and shooting accurately is a priority.
The Speed Up Phenomenon After 100-150 Rounds
Even though after you work up a load and your new barrel is shooting great, a lot of shooters notice that at around 100 to 150 rounds their rifle may stop shooting as accurately. I had this happen to a rifle and I was confused as to why something that worked so well to begin with would all of a sudden quit shooting. I decided to break out the chronograph to do another load work up to see what was going on. To my surprise, the velocity had increased around 80 fps over the original velocity! After performing another ladder test and adjusting the seating depth, the rifle was once again shooting well.
There are several thoughts on why this may happen, however, you can rest assured that it does happen. One thought is that as the barrel breaks in, the tooling marks in the throat of the chamber smooth out and allow less resistance to the bullet as it exits the bore thereby increasing speed. Another idea is that the throat area starts to get a little rough which in turn causes more resistance which increases pressure and therefore more velocity. I’m sure there are some out there who have a better understanding as to why this happens, but it can definitely affect the accuracy of your rifle. So be aware and never be afraid to rework a load to keep your rifle in tune.
Experts Confirm That Barrel Speed-Up Is Common Two respected shooters have observed an increase in velocity with new barrels, typically after 100 rounds. Gunsmith and Hall-of-Fame benchrest shooter Thomas “Speedy” Gonzalez has documented barrel speed-up with testing. Moreover, Speedy’s bore-scope barrel inspections revealed a smoothing of the barrel lands. Jim See, a top PRS competitor, has encountered barrel speed-up many times. Accordingly, he re-tunes his load at 150 rounds.
“Alex Lipworth and I documented this phenomenon about four years ago and I have told all my customers about this. My son Mikee would shoot 100 rounds through all new barrels we planned on shooting before we would begin to do load development. We had a shooting snail that caught all the bullets set up in front of an indoor bench. We called it a wear-in process because upon careful examination of the bore when the ‘Speed Up’ takes place the cut-rifled bore resembles that more of a button-rifled barrels with the lands taking on more the softer look of a buttoned bore.” — Speedy Gonzalez
“Seen it [barrel velocity increase] too many times to count. All my match barrels get a ‘generic round’ loaded for them, which has worked well in barrels historically. After I hit 150 rounds I fine-tune the load and never look back, until the tube starts to slow down at it’s life end.” — Jim See
This shocking photo of destroyed AR-15 bits and pieces was posted on Facebook by William Walter, a firearms instructor. William said this was “The worst AR-15 blow-up I have ever seen. The case head literally atomized …you can see the brass residue on the parts. The bolt was split in two also.”
There’s nothing inherently wrong with AR-platform rifles (well, except that they run dirty). Over the past six decades Eugene Stoner’s semi-automatic design has proven its merits in military and civilian applications. You may not know, but the original AR from 1955 was a .30-caliber. The Armalite AR-10 shot the 7.62×51 cartridge. Later, at the request of the U.S. Military, Armalite created a smaller version that became the M16/AR15. The rest was history. Now there are millions of AR “black rifles” in the hands of soldiers and sportsmen.
With so many ARs in circulation, it’s no surprise that some get used by folks who don’t know how to hand-load or otherwise fail to follow safe gun practices. The AR is actually a pretty sturdy rifle, but when it’s fed bad ammo, or abused, bad things can happen. Very bad things… commonly known as Kabooms.
The American Shooting Journal (ASJ) has compiled a set of particularly extreme AR Kabooms. Compiling the “evidence” from various web sites, ASJ has published nine (9) of the most Unbelievable AR-15 Fails. Here are two of the worst “AR-15 Fails”. CLICK HERE to see them all.
Nothing but busted parts after this catastrophic Kaboom…
Notice the bolt is still stuck in the barrel extension … with the rest of the gun in pieces.
Another view of this sad blow-up…
These catastrophic AR failures are eye-openers, that’s for sure. ASJ cautions: “Any weapon can fail if given the wrong ammunition, faulty reloads or a plugged barrel. Always be aware of what can happen at anytime if you fail to follow common sense and gun safety rules.”
ASJ Sources: Photobucket, Armory Blog, Pinterest, Northeastern Arms, Eric Nestor
We like Do-It-Yourself (DIY) projects. It takes initiative, creativity, and dedication to make your own hardware, and that’s worth acknowledging. For you dedicated DIY guys, here’s a great project that should inspire. Here is an owner designed and crafted F-Open rig, complete with home-built, belt-drive front rest.
Some of our mechanically-skilled readers chamber their own barrels or bed their own stocks. But these are relatively simple tasks compared to the jobs of constructing an entire rifle plus building an advanced front rest from scratch. Well that’s exactly what Forum member Steve B. (aka Essexboy) did a couple seasons back. He built his own rifle and an impressive twin-belt-drive pedestal rest. (Click photo below for large version). And get this, Steve’s home-made rifle was victorious in its first-ever match. Steve reports: “I shot my first Comp with the rifle … and managed to win with a score of 239-21!” (The match was shot at 300/500/600/1000/1100 with English scoring of 5 points for center bullseye).
Do-It-Yourself F-Open Rig from England
Steve, who hails from Essex in the UK, constructed virtually every component of his skeleton-style rifle except the 28″ HV Bartlein barrel (chambered as a 6mm Dasher) and the Tikka 590 donor action. Steve also did all the design and fabrication work on his one-of-a-kind front rest. Steve tells us: “Over the last year or so, I made this rifle stock and rest. I managed to make it all on a little Myford Lathe, as you can tell I’m no machinist but it saved me a load of money — so far I’ve got about $200 invested plus the barrelled action. The stock is aluminum except for the stainless steel bag runner. The rifle came in at one ounce under weight limit for F-Class Open division.” Steve did get help with the chambering and barrel-fitting, but he hopes to do all the barrel work himself on his next project.
The gun is very accurate. Steve notes: “I have shot the rifle to 1100 yards and it shoots well. Last time out the rifle dropped just one point at 1000 yards and 5 points at 1100 yards [English scoring system]. I know it’s not pretty, but it got me shooting long range F-Class for peanuts.” Message to Steve: Don’t worry how it looks. As another Forum member observed: “Any rifle that shoots well at 1100 yards is beautiful….”
Steve started with a Tikka 590 action: “The whole stock was made on a small (6.5×13) lathe and a vertical slide. This caused a few head scratching moments, figuring out how to hold the T6/HE30 alloy for the milling/turning operations, but it did teach me a few things. The hardest parts were clamping the longer sections (such as the fore-end) and keeping it all square. Due to the short cross-slide travel I had to keep re-setting the parts. I managed to keep all measurements to 0.001″ (one thousandth). I’m most proud of the trigger guard (photo below). This took a full day but came out really well, even if I say so myself.”
Belt-Driven Front Rest
We’re impressed with Steve’s ingenious front rest. Steve explains: “The rest is belt-driven and still in the experimental stage — hence no powder coating or polishing yet. I may have gone over the top as the key moving parts (the pulleys) run on three (3) types of bearings: radial; reamed bush; and a ball race. The main post runs on a radial bearing and the feet even have bearings in them, so when I raise the main body up (for rough height adjustment) the foot stays static.”
Will Steve build another rifle? Steve says he will, and he’s upgraded his tools: “Since building the rifle I have acquired a bigger lathe (Harrison m250) and a milling machine. For the next project I hope to be able to do the barrel work (threading, chambering, crowning) as well.” The next gun might be another Dasher. Steve explains: “After extensive reading on AccurateShooter.com, I chose the 6mm Dasher chambering, as I have a shoulder problem and can’t shoot a rifle with a lot of recoil.”
UPDATE: At approximately 6:00 pm CT, the Brownells YouTube Channel was restored. We don’t know why or how — but apparently protests from Brownells customers many have played a part in getting YouTube to relent. Brownells just issued this statement via Facebook:
PREVIOUSLY…
The Brownells YouTube channel has been terminated (shut down) without warning or notice from either YouTube or its parent company, Google. On June 9, 2018, at roughly 2:00 am, the Brownells channel was pulled from YouTube. This removed ALL Brownells YouTube content, including videos that cover firearms safety, hunting skills, firearms maintenance, and marksmanship. YouTube didn’t simply block Brownells’ gun sales-related videos — it shut down the entire Brownells channel, which had offered nearly 1800 helpful videos. The Brownells channel had acquired over 67,000 subscribers since its launch in January 2007.
History of YouTube Policies on Firearms Content
No specific reason for the Brownells shut-down was provided by YouTube, but this is part of a policy shift by YouTube. For quite some time, YouTube has been de-monitizing firearms-centric YouTube channels. As a result, gun video producers no longer receive advertising revenues, or receive a fraction of what they were once paid. Then in late March, YouTube announced tough new policies limiting the type of firearms content allowed. Gun content producers feared YouTube’s new policies might doom their channels. With the Brownells ban, it appears those fears were correct…
Ars Technica reported: “YouTube is placing more restrictions on weapons-related videos, focusing on guns with new, forthcoming policy changes. According to a Bloomberg report, YouTube intends to ban videos that ‘promote or link to websites selling firearms and accessories’, including bump stocks, beginning this April. The new policy will also prohibit instructional videos that detail how to build firearms. YouTube took similar action after the Las Vegas shooting last year by banning gun-modification tutorials.
‘We routinely make updates and adjustments to our enforcement guidelines across all of our policies,’ a YouTube representative said in a statement to Bloomberg. ‘While we’ve long prohibited the sale of firearms, we recently notified creators of updates we will be making around content promoting the sale or manufacture of firearms and their accessories’.”
YouTube prohibits certain kinds of content featuring firearms. Specifically, we don’t allow content that:
Intends to sell firearms or certain firearms accessories through direct sales (e.g., private sales by individuals) or links to sites that sell these items. These accessories include but may not be limited to accessories that enable a firearm to simulate automatic fire or convert a firearm to automatic fire (e.g., bump stocks, gatling triggers, drop-in auto sears, conversion kits), and high capacity magazines (i.e., magazines or belts carrying more than 30 rounds).
Provides instructions on manufacturing a firearm, ammunition, high capacity magazine, homemade silencers/suppressors, or certain firearms accessories such as those listed above. This also includes instructions on how to convert a firearm to automatic or simulated automatic firing capabilities.
Shows users how to install the above-mentioned accessories or modifications.
The Colt Kit does NOT include barrel, bolt carrier group, charging handle, or magazine.
Thinking of building an AR-platform rifle for varmint hunts or PRS Gas Gun Matches? Here is an interesting option from Colt — a value-priced kit with upper, complete lower, handguard, and Magpul stock. To this, add your choice of barrel and optic. We like this option because the barrel is so important to accuracy and overall performance. This Colt package costs $599.99. Add a match-grade, finish-chambered barrel from Criterion or Krieger, plus bolt carrier group, and you’re in business.
There are some very nice features on this Colt Comp Kit. The Magpul PRS stock features a quick-adjustable cheek-piece and butt-plate — allowing you to easily adapt head position and LOP for your discipline of the day. (You may want a different LOP for prone shooting vs. bench shooting). The Magpul stock works well in a rear bag. In addition the handguard comes complete with Picatinny rails on top and on both sides, affording lots of options. We might move one of the rails to the bottom, however, so it could be used for a bipod mount. The upper receiver has an integral Picatinny rail for optics.
We like the Blackhawk grip which is more comfortable than the typical grips supplied by most black rifle makers. The lower includes a trigger group, but you can later upgrade to a Timney, Geissele, or other aftermarket trigger system.
Add Your Favorite Premium Barrel:
NOTE: This Colt Kit features a Sadlak Low Profile .750 Gas Block and carbine-length gas tube. With longer barrels you may need to adapt a longer tube, but that is an easy change.
Forum member Evan K. (aka “Katokoch”) has crafted a nice rimfire benchrest rig using a Suhl action fitted into a handsome home-built cedar and carbon fiber stock. This shows what a skilled hobbyist wood-worker can create in his garage. Evan tells us: “Here is my Suhl 150-1 with a factory 1:19″ twist barrel, Leupold 36X scope, Harrell tuner, and my handmade cedar/carbon fiber stock. I started working on the laminate blank a couple years ago and finally finished it earlier this year. I’ve been using it in my IR 50/50 matches this summer. I haven’t shot a 250 with it yet but I know the rifle is very capable — as usual, I am the weak link!”
We think Evan did a great job on his stock, though he has limited stock-building experience. Evan explained: “The stock is my first attempt at making a very lightweight laminate and also gluing both vertical and horizontal seams in a blank. The wood is Spanish and Red Cedar and I made the trigger guard and buttplate with carbon fiber too (great use for small scrap pieces). The finish is hand-rubbed spar urethane and the action is semi-glued-in with Devcon 10110 and stainless pillars.”
USRA-IR50/50 is a popular .22 rimfire benchrest discipline with three (3) classes: 13.5 lb., 10.5 lb., and 7.5 lb. (Sporter). The matches are shot at 50 yards and 50 meters.
For this chart, HowMuch.net analyzed data from the NSSF’s 2017 Firearms and Ammunition Industry Economic Impact Report to estimate gun industry output and jobs in each state.
The firearms industry is an important element of our nation’s economy. Manufacturing products for shooting, hunting, and LEO/military applications employs hundreds of thousands of workers and contributes billions of dollars to America’s GNP. The mainstream media demonizes firearms and attempts to ridicule gun-owners, but the fact remains that guns and ammo are an important part of American culture and a key element of our economy.
Guns America recently published an article showing the economic impact of the firearms industry on a state-by-state basis. This features a “money map” of the USA created by HowMuch.net based on data from the National Shooting Sports Foundation. The number one state is Texas, with $3.83 Billion of economic impact and 23,070 jobs. That may not surprise you, as many quality companies such as Shilen are based in the Lone Star state. However, you may be surprised by the number two state, California, given that jurisdiction’s liberal legislature, and anti-gun policies. But there are still plenty of guns, shooting accessories, and ammo produced in California, generating $3.64 Billion in firearms industry economic activity and over 20,000 jobs. Given that job number, perhaps California’s politicians should think twice before they enact more misguided anti-gun laws.
Weatherby is relocating from California to Wyoming, citing California’s high corporate taxes and hostile business regulations.
Here are Top Ten States, ranked in order:
1. Texas: $3.83B and 23,070 jobs
2. California: $3.64B and 20,610 jobs
3. Minnesota: $2.43B and 11,650 jobs
4. Florida: $2.39B and 14,850 jobs
5. Illinois: $2.18B and 10,681 jobs
6. North Carolina: $1.98B and 11,427 jobs
7. Pennsylvania: $1.94B and 12,436 jobs
8. Massachusetts: $1.86B and 7,116 jobs
9. New York: $1.84B and 8020 jobs
10. Ohio: $1.61B and 11,772 jobs
Ranking third overall is Michigan with $2.43 Billion in economic activity, followed by Florida close behind in fourth place with $2.39 Billion. The NSSF’s data reveals some surprising trends, notes Guns America: “While pro-gun states like Texas ($8.83B) boast a large firearms industry that employs thousands of people, states with stricter firearms regulations like California ($3.64B), Minnesota ($2.43B), Illinois ($2.18B), and Massachusetts ($1.86B) also incorporate relatively large gun industries.”
Looking at that list, it is noteworthy that, along with California, another anti-gun state, New York, has made the Top Ten. New York’s Governor Andrew Cuomo has attacked the firearms industry and the NRA, and the N.Y. State Department of Financial Services has pressured Banks and Insurance companies to stop doing business with gun industry firms. One wonders if Governor Cuomo and his minions have considered the full consequences of their anti-gun activism. Guns America observes: “it is notable that gun makers can survive at all in states like New York, California, and Massachusetts. Attacking firearm makers and sellers is one of the most common anti-gun tactics, but some companies still manage to scrape by despite increasing regulations and public hostility.”
Though it has moved much of its production to Alabama, Remington retains production facilities in New York state. The Remington enterprise was founded in 1816 by Eliphalet Remington in Ilion, New York, as E. Remington and Sons. Remington is America’s oldest gun maker and is still the largest U.S. producer of shotguns and rifles.
A pre-cut hole at the rear of each receiver allows easy insertion of a cleaning rod to clean the bore from the chamber. The Brownells BRN022 receiver will take all accessories/parts made for the Ruger 10/22. You can order factory bolt parts, and a premium barrel.
Now you can build the ultimate 10/22 with an affordable billet railed receiver. Precision-machined from billet 6061 aluminum, the Brownells BRN-22 receiver is fully compatible with components for the Ruger 10/22 platform. Brownells offers both standard factory 10/22 top profile (with drilled-and-tapped scope mounting holes), and a Railed Receiver (shown above) with an integral Picatinny top rail. We think most buyers will get the railed version shown above. At $89.99, it’s only $10 more than the basic version.
Some folks may ask — “Well why not just purchase a production Ruger 10/22 rifle from the factory? It will come complete with barrel, trigger, and stock…” The answer is the components. By starting with a bare bones receiver you can have better-than-factory components from the start — a better barrel, a premium trigger. Plus the Brownells BRN-22R Railed Model comes with a built-in Picatinny rail — that makes it easy to mount optics. And, if you want a specialty stock — say for rimfire tactical games — you can purchase an aftermarket stock that fits your requirements. Finally, the action has a port in the rear so you can insert a cleaning rod to clean from the breech end. This avoids accuracy-compromising cleaning rod damage to the muzzle.
The first part of the video features the all-new Brownells BRN-22R Railed Receiver:
Railed Receiver with Installed Barreled for $159.99
Brownells also sells BRN-22 receivers complete with pre-installed .22 LR barrels. The BRN-22 Barreled Receiver features a 16″ long barrel in either sporter or heavy contours, threaded at the muzzle. Price is $149.99 standard, and $159.99 with Railed Receiver. Then you can add the remaining components — your choice of trigger, stock, sights/optic, and muzzle device.
NOTE: This is NOT a complete barreled action — you will still need bolt, bolt handle, and trigger group — but all those parts can be easily acquired by direct mail-order. Like the bare BRN-22 receiver, this barreled receiver is the “gun” component for ATF purposes, so this must be shipped to your FFL. If you don’t want the rail, get the standard barreled receiver and save $10.00.
BRN-22 Barreled Receiver Features:
Receiver machined from 6061 T6 aluminum billet
Matte black hardcoat anodized receiver finish
1/2″-28 tpi muzzle threads for brakes and suppressors
Matte black oxide finish on barrels
Compatible with all components that fit a factory Ruger® 10/22®
FFL required for purchase
Barrels are available in Sporter and Heavy profile, both in 16″ length, while the Heavy barrel is also available in a short, 10″ length for pistol or SBR builds. All barrels come with ½”-28 tpi muzzle threads for the installation of a compensator, flash suppressor, or silencer.
At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.
Today, 28 May, 2018 is Memorial Day — the important day when we honor those military personnel who have died serving their nation. We urge all of our readers to respect this solemn occasion and remember those who “sacrificed all” to safeguard your freedom.
To mark this holiday, many vendors are running Memorial Day Sales. We spotlight some of these end-of-May promotions. Be aware that Memorial Day Sales are typically short-lived — quite a few of these sales conclude at 11:59 pm on Monday May 28th, or a day later — Tuesday May 29th. A few sales end Tuesday at noon. If you want these deals — act now.
1. Natchez — 10% Off Everything Memorial Day Sale
Natchez Shooters Supplies typically offers some of the best prices on reloading tools and optics. Now those deals are even better as Natchez has knocked 10% off the price of virtually every item in stock. Use Code PO180526 to get these savings. But hurry — sale ends 5/28/2018 at 11:59 pm CT.
2. Bruno’s Shooters– Major Memorial Day Sale
Bruno Shooters Supply runs a big sale each year during Memorial Day weekend. Lots of premium items are discounted: BAT Actions, Krieger Barrels, Berger Bullets, Lapua components, Nosler Bullets, Redding Dies and more. There are also discounts on primers and powders. CLICK HERE to see all the Sale Items. You’ll want to act quickly, as Bruno’s Sale ends Tuesday, 5/29/2018 at 12:00 noon Mountain Time. That’s a mid-day cut-off on the 29th!
As part of its Upgrade Summer Sale, Brownells is offering Free Ground Shipping ($49+) and Free Second-Day Shipping ($99+). Scores of popular items are on sale now through 11:59 PM on May 28, 2018: Leupold Scopes, Aero Precision Uppers and Lowers, Lake City Ammo, Federal Ammo, Remington Shotguns, Smith & Wesson pistols, MagPul magazines, and much more.
4. MidwayUSA — Save $10, $20, or $30 with Codes
Large retailer MidwayUSA offered free shipping for Memorial Day Weekend. Now MidwayUSA is running a money off promotion through 5/31/2018. While some exclusions apply, this applies to most regularly-priced, in-stock items (not sale or clearance items). Here’s how it works, use code 10MAY18 during check-out to save $10 off $100+, use code 20MAY18 to save $20 off 200+, or use code 30MAY18 to save $30 off $300 or more. Note, this special ends 5/31/2018 at 11:59 pm CT.
5. Precision Reloading — Money Off Memorial Day Savings
Precision Reloading has a pretty straight-forward promo for Memorial Day. You can get $10 off any order of $100 or more with Code 10M18, OR get $30 off any order of $300 or more with Code 30M18. That’s 10% saved right off the top. But act soon — this offer expires May 28 at 11:59 pm CST.
6. Optics Planet — 10% Off Orders $50 or More
Right now you can save 10% off scores of products at Optics Planets. Of course this includes Riflescopes, Rangefinders, and Spotting Scopes, but Optics Planets carries many other products of interest to shooters and hunters. Use Code MEMWK to save 10% off all qualifying Sale Items. NOTE: This offer expires May 28 at 11:59 pm CST.
Optics Planet Sale Tip courtesy EdLongRange.
7. Brownells — Howa Barreled Actions on Sale, Starting at $259.99
Right now, Brownells is running a big sale on Howa Barreled Actions, in a wide variety of chamberings. You may want to pick up one of these barreled actions, which start at $259.99. We like Howa actions — they are smooth, and they feature an excellent two-stage trigger. Howa also offers a unique Mini Action, which is great for a small-caliber varmint rig. Here are some of the Howa Barreled Actions currently in stock at Brownells. NOTE: This is just a partial sample — there are many other varieties:
.223 Rem, 20″ Heavy Barrel, $399.99
6.5 Grendel, Mini Heavy Barrel, $389.99
6.5 Creedmoor, 24″ Heavy Barrel, $399.99
6.5 Creedmoor, 26″ Heavy Barrel, $429.99
7mm-08, Std Cerakote, $579.99
7.62×39, Mini Light Barrel, $259.99
.308 Win, 20″ Heavy Barrel, $289.99
.308 Win, 24″ Heavy Barrel, $299.99
.30-06 Sprg, 22″ Sporter Barrel, Cerakote, $349.99
.300 Win Mag, 24″ Heavy Barrel, $279.99
8. Creedmoor Sports — Free Shipping on $49 Plus Sale Items
Creedmoor Sports is running an attractive promotion for Memorial Day. First you can get Free Ground Shipping on orders $49.00 or more. In addition many items are 10% off. For example Lapua and SK rimfire ammo is 10% off now. NOTE: This is a limited time offer. Some exclusions apply. Drop-shipped items exempt.
9. Stocky’s — LR Stocks with Aluminum Bedding Block, $179.99
Here’s a good deal on a versatile Stocky’s Long Range Stock with aluminum V-block bedding system. For just $179.99, order this for Rem/Rem Clone long actions or short actions, with either narrow or wide (varmint/tactical) barrel channel. This would be a good choice for a varmint rifle. This is also offered with handsome hydrographic or web-pattern baked-on textured finishes for $199.99.
Craters may look interesting on the moon, but you don’t want to see them on your primers. Certain mechanical issues that cause primer craters can also cause primer piercing — a serious safety problem that needs to be addressed. If you have a gun that is cratering primers (even at moderate pressure levels), there is a solution that works with many rifles — send your bolt to Greg Tannel to have the firing pin hole bushed.
Shooters who convert factory actions to run 6BRs, 6PPCs or other high-pressure cartridges should consider having the firing pin bushed. These modern cartridges like to run at high pressures. When running stout loads, you can get cratering caused by primer flow around the firing pin hole in the bolt face. The reason is a little complicated, but basically the larger the hole, the less hydraulic pressure is required to crater the primer. A limited amount of cratering is normally not a big issue, but you can reduce the problem significantly by having a smith fit a bushing in the firing pin hole. In addition to reduced cratering, bushing the firing pin often produces more consistent ignition.
This is a highly recommended procedure that our editors have had done to their own rifles. Greg Tannel (Gre-Tan Rifles) is an expert at this procedure, and he does excellent work on a wide variety of bolts. Current price for a bushing job, which includes turning the firing pin to .062″, is $80.00, or $88.00 with USPS Priority Mail return shipping.
If you have a factory rifle, a bushed firing pin is the way to go if you are shooting the high-pressure cartridges such as 6PPC, 6BR, 6-6.5×47 and 6.5×47. This is one of the most cost-effective and beneficial upgrades you can do to your factory rifle. For more info on the Firing Pin Bushing process, visit GreTanRifles.com, or email greg [at] gretanrifles.com. (After clicking the link for GreTanRifles.com, Click on “Services” > “Shop Services” > “Bolt Work”, and you’ll see a listing for “Bush Firing Pin Hole & Turn Pin”. Select “View Details”.)
Firing Pin Hole Bushing by Greg Tannel
Work Done: Bush firing pin hole and turn pin.
Functions: Fixes your cratering and piercing problems.
Price: $80.00 + $8.00 return shipping Total Price: $88.00
Actions for which Bushing is Offered: Remington, Winchester, Savage multi-piece pin, Sako, Kimber, Nesika, Stiller, BAT Machine, Kelbly, Lawton, Surgeon, Borden, Wichita, Hall, Ruger, Howa, Weatherby, Dakota, Pacific Tool, Phoenix, and Defiant bolt action rifle or pistol.
Actions for which Bushing is NOT Available: Case hardened receivers, ARs, Accuracy International (AI), Barnard, Big Horn, Cooper, Desert Tactical Arms, Kimber, Rosenthal, New Savage single piece pin, Rimfires, Falling block, Break-open, Lever, Pump rifles, 1903-A3, CZ, Mauser.
How to send your bolt in to be bushed:
You can send your bolt snail mail, priority mail, or UPS (Please do not use FEDEX as it sometimes has delivery delays). Pack your bolt carefully and ship to: Gre’-Tan Rifles, 24005 Hwy. 13, Rifle CO 81650. Please include your name, phone number, and return shipping address.
Due to the high volume of work, turn around is 5 to 8 weeks on bushing a bolt. Three or more bolts will be sent back to you UPS and we will have to calculate shipping. We can overnight them at your expense. You can pay by check, money order, or credit card. For more information visit GretanRifles.com.
Two respected shooters have observed an increase in velocity with new barrels, typically after 100 rounds. Gunsmith and Hall-of-Fame benchrest shooter Thomas “Speedy” Gonzalez has documented barrel speed-up with testing. Moreover, Speedy’s bore-scope barrel inspections revealed a smoothing of the barrel lands. Jim See, a top PRS competitor, has encountered barrel speed-up many times. Accordingly, he re-tunes his load at 150 rounds.
The gun is very accurate. Steve notes: “I have shot the rifle to 1100 yards and it shoots well. Last time out the rifle dropped just one point at 1000 yards and 5 points at 1100 yards [English scoring system]. I know it’s not pretty, but it got me shooting long range F-Class for peanuts.” Message to Steve: Don’t worry how it looks. As another Forum member observed: “Any rifle that shoots well at 1100 yards is beautiful….”
Craters may look interesting on the moon, but you don’t want to see them on your primers. Certain mechanical issues that cause primer craters can also cause primer piercing — a serious safety problem that needs to be addressed. If you have a gun that is cratering primers (even at moderate pressure levels), there is a solution that works with many rifles — send your bolt to 
Firing Pin Hole Bushing by Greg Tannel
