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.
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AR-platform rifles can be maintenance-intensive beasts. But some AR owners make the situation worse by not regularly cleaning important small parts, or by using too much oily/greasy lubricants in the wrong places. A properly maintained and lubricated AR15 can shoot hundreds of rounds (between cleanings) without a problem. If you learn where (and where not) to apply lubricant, you’ll find that your AR will run more reliably and the task of cleaning the bolt and bolt carrier will be less of a burden.
Here is a good video that explains AR-15 Cleaning and Maintenance. In this 30-minute NSSF video, Gunsite Academy instructor and gunsmith Cory Trapp discusses the proper way to clean and maintain the AR-15 carbine. Very knowledgeable, Trapp provides rock-solid advice for AR owners. Along with cleaning procedures, this video explains how to inspect key components and how to function-test your AR before each shooting session.
If you want to keep your black rifle running smoothly and reliably, you must clean it regularly and follow the correct maintenance procedures. Here’s another good video that explains how to properly disassemble and clean AR-platform rifles.
Take-Down and Full Cleaning of AR15 by Jerry Miculek
Here ace shooter Jerry Miculek takes down and cleans an AR-platform rifle belonging to his daughter Lena. This is a good video because Lena’s rifle was “run hard and packed up dirty” so you can see where carbon and grease build up. This 35-minute video is very thorough. Jerry is one of the nation’s top action carbine shooters, so listen carefully to his advice on cleaning and lubrication.
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Are sound suppressors useful in competition shooting? In some disciplines, and in venues where sound “moderators” are permitted, the answer is “yes”. In a past edition of Shooting Sports USA eZine, you’ll find an interesting article about the use of sound suppressors (aka “cans”). The article explores the use of suppressors in Europe and in tactical matches in North America. You’ll also find an explanation of the rules and regulations governing suppressor ownership and use in the United States.
Shooting Sports Editor Chip Lohman tests three rifles from the bench and found that sound suppressors did not harm accuracy. In fact, all three test rifles (one each in .223 Rem, .308 Win, and .338 Lapua Magnum), shot slightly better 5-shot groups at 200 yards when a suppressor was fitted to the barrel. However, the suppressors did alter point of impact. Interestingly, velocity standard deviation (SD) values were lower with suppressors in place for all three test rifles. This observation calls for further study.*
So the use of suppressors in competition could be a good thing. However, in the United States, current NRA rules prohibit the use of sound suppressors. NRA Rule 3.16.1 subsection (a) states: “Sound Suppressors are not authorized for use in High Power competition.” In addition, there are some practical problems with suppressors — the heat rising off of a naked suppressor can create mirage problems (that’s why some shooters wrap their cans with a cover).
Despite such issues, now commonly see suppressors on rifles used in tactical matches and PRS/NRL events. For example, many competitors in the Steel Safari field challenge match use suppressors. The photo below shows our friend Zak Smith competing in the Steel Safari with his suppressed Accuracy International rifle.
Commentary — What Can We Conclude?
Obviously, this three-rifle SSUSA test was not definitive. One well might observe different results with different types of suppressors, fitted to different kinds of rifles. Mounting a suppressor to any barrel will certainly affect harmonics and “tune”. But this SSUSA study does suggest that tactical shooters, who are allowed to use suppressors in competition, may find that the benefits of suppressors (significantly reduced recoil and less noise) outweigh any meaningful accuracy loss, at least in PRS-type matches.
NOTE: The article cautions that one should not extrapolate too much from the SD numbers, given the low number of test shots. Chronograph-maker Ken Oehler, when asked to comment on the SD values stated: “[You should] report the observed SDs, but draw no conclusions until… you can do more testing with larger sample sizes.”
Qualifications to Obtain a Suppressor
To legally obtain a suppressor, you must fill out Federal Forms and pay a $200 fee to the ATF. You must also pass BATFE background checks and otherwise comply with Federal and state laws. States can regulate suppressor ownership or use, so be sure to check the laws in your area. On the federal level, the process to acquire a suppressor is regulated under the National Firearms Act of 1934.
Jerod’s Tactical Trio
Many guys are lucky to have just one accurate tactical rifle fitted with a custom barrel and high-end optics. Well forum member Jerod (aka Stinnett1981) has three!
Jerod calls his tactical trio the “Three Amigos”. All are built with Manners Composite stocks and Bartlein barrels. But there are three different chamberings. In order below (from top to bottom) are: .308 Win (Bartlein 5R, 1:10″ twist); .223 Rem (Bartlein 5R, 1:8″ twist);,and 6.5×47 Lapua (Bartlein 5R 1:8.5″ twist). Read on for a full description of each build.
The tan rifle is Jerod’s .308 Winchester. It has a Manners T4A stock, trued Rem 700 SA, Badger M5 DBM, and Bartlein 5R 10-twist HV contour finished at 23″. The optic is a Bushnell XRS 4.5-30X50mm FFP with G2 reticle scope.
The Green rifle is a .223 Remington. This has a Manners T4 stock, trued Rem 700 SA, Badger M5 DBM, and Bartlein 5R 8-twist HV contour finished at 23″. On top is a Nightforce NXS F1 3.5-15X50mm FFP with MLR 2.0 reticle scope. Jerod says: “This scope and reticle are awesome.”
The Black rifle is chambered for the 6.5-47 Lapua. Components are: Manners T4A stock, Stiller TAC 30, Badger M5 DBM, Bartlein 5R 8.5-twist bull barrel (1″ at muzzle) finished at 26″. The scope is a Nightforce NXS 8-32X56mm with NP2DD reticle.
What Comes Next — A Rimfire Maybe?
While Jarod’s Three Amigos make up a very impressive tactical troika, we’d like to see one more rifle added to the mix — a .22 LR rimfire rig, set up with a similar stock. That would be perfect for low-cost cross-training, or competition in Rimfire Tactical matches. Jerod could build the “fourth Amigo” using a rimfire action. Here is just such a rifle, built by Brian of GA Precision with a modified Rem 40X action in a Manners T4A stock (matching Jerod’s centerfire stocks). Pretty cool eh?
Could This Be the Fourth Amigo? 40X Rimfire in Manners Stock
Brian, a gunsmith at GA Precision, built this rimfire rig with GAP colleague Anthony Soukup.
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We’ve always liked the capacious, durable range boxes from MTM Case-Gard. And MTM offers a special “Tactical” version for AR shooters. This detachable-lid Tactical Range Box features a magwell-filling “action block insert” to support your AR securely during cleaning. Magwell posts like this have been used for years by AR gunsmiths. It’s a fast and convenient way to secure your AR.
The Tactical Range Box also comes with two adjustable cradles that will support most conventional bolt-action rifles and lever guns. These plastic cradles are gentle on fancy stocks, and they can be removed and stowed in the bottom of the box during transport.
The Tactical Range Box uses a two-piece design. The removable top storage compartment holds oils, solvents, brushes, patches, and small accessories. Unlatch the top box to reveal a large, deep storage area that will hold tools, earmuffs, ammo boxes and other larger items. MTM Range Boxes are big enough to hold pretty much everything you need at the range, except your front rest and rear sandbag. Midsouth Shooters Supply offers the MTM Tactical Range Box (item 008-TRB40) for just $52.72. Like MTM’s standard Shooting Range Box, the Tactical Range Box is well-built and much less flexy than generic plastic tool-boxes. Check out the features of this range box in the video below.
Practical USER TIP — Keep some heavy items in the box for more stability. Forum member Tom Alvez explains: “I have one of those range boxes… It’s a great product, really. But, unless there is some pretty heavy stuff in the box when the rifle cleaning starts it may get pretty skittery. Maybe [add] a block or two of lead — that could come in handy later.”
For more info, contact MTM® Molded Products at (937) 890-7461 or visit MTMCase-gard.com.
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Chris Simmons Wins International Precision Rifle Federation PRS World Championships
Lapua congratulates Team USA’s Chris Simmons on winning the first-ever International Precision Rifle Federation Precision Rimfire World Championships. This highly anticipated match took place August 28 through September 3 at the Piancardato Tiro A Volo range in Collazzone, Italy. Chris was shooting a Vudoo rifle with Lapua X-Act .22 LR rimfire ammunition. Simmons posted an Aggregate score of 165.00 points with a time of 1480.45. The first four finishers were also from the USA. CLICK HERE to see hundreds of photos from the event.
The International Precision Rifle Federation (IPRF) World Championships drew top shooters from 23 nations. The three-day event had competitors tackle a challenging course of fire at different distances, shooting from both supported and unsupported obstacles, with long-range shots, and moving targets, all within tight time constraints.
Simmons, no stranger to the winner’s circle, was part of a two-year selection process to represent the United States at the inaugural IPRF event. Over the past nine months, Simmons took his training to another level, getting up before daylight to hit the range. He also spent many evenings after work shooting 10-12 different positions in a 90-second timeframe, firing hundreds of rounds daily.
Match was conducted in a beautiful hillside location in Collazone, Italy.
After surviving tricky wind conditions and bad wind calls, Simmons found himself in second place prior to going into the last two stages. He then performed great in the final two stages, taking the overall win: “Paul Dallin and I ended up tied and it came down to the fastest aggregate time of all the stages,” commented Simmons. “I won the World Championship by 23 seconds in 2023! Paul is a hell of a shooter and competitors and was tough to beat. Congratulations to him on his second-place finish!”
Top Five Shooters at IPRF Rimfire World Championships:
1. Chris Simmons, USA
2. Paul Dallin, USA
3. Payton Grimes, USA
4. Tyler Orth, USA
5. Radek Novak, Czech Republik
“It was an honor to be able to represent Team USA in the World Precision Rifle Championships in Italy. Thank you to Lapua for supporting both myself and Team USA with quality ammunition,” stated Simmons.
Member of Team USA with a patriotic stars and stripes rimfire rifle.
Competitors came from 23 different countries from around the world.
The USA’s Payton Grimes was top lady shooter and 3rd overall.
The event included unusual stages with across-the-water shots.
Ammo Testing at Lapua Rimfire Performance Centers
The Lapua X-ACT .22 LR ammunition used by Chris Simmons was matched to his VuDoo rifle at a Lapua Rimfire Performance Center in the USA. Unique lots of ammunition are tested at 50 and 100 meters simultaneously, identifying the best performing ammunition for purchase. This service is available to any shooter who wishes to gain a competitive advantage. Schedule your testing at either of Lapua’s Rimfire Performance Centers located in Mesa, Arizona, or Marengo, Ohio.
To learn more about the Lapua Rimfire Performance Centers or to schedule an appointment, visit Rimfiretest.com.
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AR owners know that their black rifles require regular cleaning and maintenance. And this modular platform allows many options for stocks, fore-arms, and optics mounting. That ability to customize is one of the AR’s major attractions, but customization requires solid understanding of the AR’s design and components.
To help AR owners optimize their rifles and maintain their rifles properly, Gun Digest Media offers an excellent 320-page illustrated book: AR-15 Setup, Maintenance and Repair. Authored by Patrick Sweeney, this book is a “one-stop guide to repairing, maintaining and modifying America’s favorite rifle.” The MSRP for the paperbook resource is $33.99 from Gun Digest, but it is available on Amazon starting at $25.13 with $3.99 shipping. Digital editions are offered by GunDigest for $31.99.
If you need to disassemble and maintain your AR rifle, swap barrels or handguards, add optics, or customize the stock, Gun Digest’s AR-15 Setup, Maintenance and Repair book tells you what you need to know. From field-stripping to barrel mounting and trigger installations, the book covers a wide range of topics. The book provides step-by-step instructions for set-up and maintenance, with hundreds of detailed photos. The book also includes AR gunsmithing chapters with reviews of recommended tools.
Author Patrick Sweeney is a certified master gunsmith and armorer instructor for police departments. Sweeney has also authored the notable 4-volume Gunsmithing the AR-15 series (Vol. 1, Vol. 2, Vol. 3, and Vol. 4) and 20+ other titles for Gun Digest Books.
Whether you want to learn about disassembling your AR for regular maintenance, field-stripping, swapping out parts, adding optics or customizing a stock, AR-15 Setup, Maintenance and Repair guides you through everything you need to know to keep your AR-platform rifle running well. There are also tips on how to improve accuracy, and maintain your bolt carrier group properly.
Authored by Patrick Sweeney
Published by Gun Digest Books
ISBN-13: 978-1951115470
320 pages, softcover, 8 ¼ x 10 7/8 inches
Editor’s NOTE: The key to keeping an AR running reliably is proper lubrication (in the RIGHT places), and regular cleaning of the bolt carrier and bolt, including ejector recess and extractor recess. The majority of non-functioning ARs we’ve seen had gunk, lube, carbon, and brass shavings in those recesses.
Other AR Books by Patrick Sweeney
Bonus Video — AR15 Maintenance with Jerry Miculek
In this helpful video, legendary shooting Jerry Miculek explains how he cleans and maintains his AR-platform rifles. Miculek shoots ARs in three-gun competitions.
This article is Copyright 2023 AccurateShooter.com. No republication is allowed without advance permisson and fees.
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In 2020, Lyman released the updated Second Edition of its AR Reloading Handbook. The original AR Reloading Handbook was the first reloading manual dedicated exclusively to the most popular semi-auto rifle in the USA. The Second Edition of this comprehensive Lyman AR Reloading Handbook has been updated to include more cartridge types and significantly more load data. This provides AR shooters with reloading info for the vast majority of popular chamberings used in AR-platform firearms. CLICK HERE to order the book for just $12.49 on Amazon, a 31% savings off the $17.98 list price.
Reloaders will appreciate the extensive pressure-tested data covering a very wide selection of bullet types and powder types. The Second Edition provided data for newer cartridges such as the .224 Valkyrie, .22 Nosler, .24 Nosler, 350 Legend, as well as sub-sonic data. In addition, articles by well-known authorities are included, covering topics such as “Building An AR” and “AR15 Gas System Lengths”. This book is available direct from Lyman and from Amazon (at a discount).
Features of Lyman AR Reloading Handbook (Second Edition)
— Reloading data for popular AR-platform cartridge types, including the .223 Rem, .224 Valkyrie, 6.8 Rem, .300 AAC, 7.62×39, 350 Legend, 450 Bushmaster, .50 Beowulf and more.
— Many informative articles on specialty topics such as Reloading for Suppressors and Building ARs.
— Load Data covers all major brands of bullets and powders.
— Load Data for cast bullet data and sub-sonic loads.
AR-Platform Insights — Operation and Maintenance Tips
Here are two helpful videos for AR owners. The first uses 3D computer animation to show how AR-platform rifles work — from the inside. The Cutaway views show the operation of the gas system and bolt while cycling. The second video, by legendary competitive shooter Jerry Miculek, provide helpful guidance on AR disassembly and maintenance.
Book publishing tip from EdLongRange. We welcome reader submissions.
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For today’s Sunday GunDay story, we feature highlights from two in-depth reports on rifles built around the relatively new 6GT cartridge (also known as the “6mm GT”). Developed by George Gardner (G.A. Precision) and Tom Jacobs (Vapor Trail), the 6GT was designed to feed well from magazines, be more efficient than the 6mm Creedmoor, and offer outstanding accuracy. It is just enough bigger than the 6mmBR or 6 Dasher so it feeds better. But it retains many of the qualities of the 6mmBR (high efficiency and outstanding accuracy). Burning significantly less powder than the 6mm Creedmoor, the 6GT is a bit less expensive to shoot, and should, theoretically at least, deliver better barrel life.
“The [6GT] is a more predictable and barrel-friendly cartridge than the 6mm Creedmoor. It can utilize the accurate and forgiving powders of the 6BR, has fantastic accuracy, and due to its shoulder angle and case length, it doesn’t suffer from feeding issues.” — PewPewTactical.com
We should say that the 6 Dasher has been used very successfully in PRS/NRL competition, with some aftermarket magazine accessories. For this reason, if you already shoot a 6 Dasher, moving to a 6GT may not be worth the cost of new dies and new brass. A.J. Deysel, writing for LoadDevelopment.com, writes:
“The longer case of the 6mm GT means it feeds as reliably from a magazine as a 6mm Creedmoor, and offers slightly higher powder capacity and in turn velocities than the 6mmBR variants, whilst still being able to use the same accurate and forgiving propellants.
You will also find many competitive and average Joes shooting 6mmBR and 6mm Dashers with a Primal Rights or some other mag conversion kit, having very few if any mag-feed issues at all, so that pretty much also nullifies the need to move away from those [chamberings] if you already own one of those or the reloading equipment for it.” — LoadDevelopment.com
Part I: The 6GT Cartridge for Precision Rifle Competition
Report by Vu Pham
I was ready to build a 6 Dasher when I saw a lot of buzz… about a new caliber George Gardner (Owner of G.A. Precision) and Tom Jacobs (Owner of Vapor Trail Bullets) designed, the 6GT. After some research and talking to George, I ditched the 6mm Dasher build and had GA Precision build me a 6GT on a GAP Templar action I already had in the safe. The reasons to try the 6GT in a new PRS-style rig were as follows:
1. Push a 110-115 grain class bullet at 2880-2930 FPS safely in the Sacramento heat.
2. Achieve a load that is reliable and predictable. The caliber must be easy-to-tune and predictable from barrel to barrel. I don’t want to spend weeks developing a new load each time I spin on a fresh barrel.
3. Be able to run the same mag in all my guns without having to tweak or use mag kits. The round must feed from AICS and AW magazines without major tweaking or hiccups.
4. Get good barrel life. The barrel needs to go 2200-2500 rounds with match-grade reliability and accuracy.
5. Have a competitive cartridge with the least possible recoil without sacrificing too much performance down range, compared to bigger options like the 6mm Creedmoor.
6GT feeding from un-modified magazines has been flawless in all the rifles we tested. The 6GT feeds so well, I sometimes have to do a press check to ensure there is a round in the chamber.
On paper the 6GT seemed like the perfect cartridge for PRS- and NRL-style competition. It has the low recoil of a 6 Dasher, with good feeding and mag compatibility. With the 6GT, a competitor can push 105gr bullets at 3000+ FPS or run heavier bullets at 2800-2900+ FPS.
Knowing that I would initially have to make my own 6GT brass and do quite a bit of load development, I enlisted the help of Dan Bertocchini with CS Tactical. Dan has a lot more experience with wildcats and is the man when it comes to this type of data gathering. He has been running a 6 Dasher for a few years so I was curious how he would compare the 6GT to his 6 Dasher.
Quick Summary: “I am really digging the 6GT and the capabilities it offers. It can launch 103gr Vapor Trails at 3000+ FPS or lob heavy 115gr DTACs in the low-to-mid 2900s comfortably. I think we will see this cartridge go mainstream in PRS/NRL-style competition in 2020.” — Vu Pham
The new 6GT Cartridge Was Tested in Three (3) Tactical Rifles:
Rifle 1: Vu’s 6GT 1.0
Builder: GA Precision
Action: Left Hand GAP Templar (large firing pin)
Barrel: Bartlein 7.7 Twist finished at 26″ with a 419 Hellfire Brake
Stock: KMW Sentinel
Optic: Vortex Razor Gen II 4.5-27x56mm EBR-7C MRAD
Bi-Pod: Harris
Trigger: Timney Calvin Elite
Magazines: AICS and AW
Support Bag: Wiebad Fortune Cookie
Rifle 2: Vu’s 6GT 2.0
Builder: Rubicon Precision
Action: Impact Precision 737
Barrel: Bartlein 7.0 Twist finished at 27″ with a 419 Hellfire Brake
Stock: XLR Industries Envy Chassis
Optic: Vortex Razor Gen II 4.5-27x56mm EBR-7C MRAD
Bi-Pod: Harris with Henderson Arca adapter
Trigger: Trigger Tech Diamond
Magazines: AICS and AW
Support Bag: Wiebad Fortune Cookie
Rifle 3: Dan’s 6GT
Builder: CS Tactical
Chambered by: Rubicon Precision
Action: Lone Peak Arms Fusion
Barrel: Proof 7.0 Twist finished at 28″ with a Muzzle Brake and More Brake
Stock: XLR Industries Envy Chassis
Optic: Minox ZP5 5-25x56mm MR4
Bi-Pod: Arca Cyke Pod (PRS)
Trigger: Trigger Tech Diamond
Magazines: MDT
Support Bag: Armageddon Gear OG Game Changer, Waxed Canvas
Alpha Munitions Pre-Production 6GT Brass George Gardner was kind enough to send us 50 pieces of Pre-Production Alpha 6GT brass for preliminary testing. Like the cases I formed from 6.5×47 Lapua brass, the Alpha 6GT brass will use a small rifle primer. Purchased direct from Alpha Munitions, 6GT brass is now $1.30 per case, which is comparable with Lapua 6mm Creedmoor brass, currently $120.99/100 at Grafs.com.
The major difference between 6.5×47 Lapua-formed brass and Alpha 6GT brass is the case capacity. Alpha 6GT brass has 1.5 to 1.7 grains more case capacity. When a piece of 6.5×47 Lapua brass is formed into a 6GT, the walls of the case now become the shoulder and part of the neck. In a normal piece of brass, the shoulder and neck are typically thinner because of the thickness of the brass tapering from the body to neck.
While the cartridge design was optimized for Hodgdon Varget, the extra case capacity of the Alpha 6GT brass opens the door to Hodgdon H4350 (my favorite powder) and Alliant Reloder 16.
Test Results with Alpha Munitions 6GT Brass
Initial test results were as expected from a premium brass-maker. Dan and I both got excellent Standard Deviations and Extreme Spreads over my MagnetoSpeed V3 and his LabRadar. This string below was with 112gr Barnes Match Burners and 33.8 grains of Varget. Can’t complain about a 3 FPS Extreme Spread!
Yes, H4350 Works with the Alpha Munitions Brass
Personally, I prefer running Alpha 6GT brass with H4350 rather than Varget pushing a heavier bullet. H4350 burns slower and cleaner which should equate to better barrel life. The Lapua-formed 6GT cases just do not have the capacity to reach the cartridge’s full capability with the slower burning powders.
Is the 6GT cartridge accurate? Definitely. Here is a 5-shot group at 600 yards shot by Dan. This was Alpha 6GT brass, with Hodgdon H4350 pushing Barnes 112gr Match Burner bullets.
PART II — 6GT Load Development with Multiple Powders
This text is taken from a full report by Mike McCasland on his 6GT (aka “6mm GT”) bolt action rifle. This rig was designed for general use, not just for PRS/NRL matches. In his 6GT rifle, Mike tested multiple powders including Varget, H4350, Reloder 16, Reloder 15, Shooters World Precision, and Vihtavuori N140. For more details, CLICK HERE for full report.
About the 6mm GT Cartridge
BRASS — The first thing you’ll find is cartridge brass choices for the 6 GT are rather limited currently. At present, the only commercial options are Hornady and Alpha Munitions. For the die-hard Lapua fans, you can technically make 6mm GT brass from 6.5×47 Lapua, however that process is very labor-intensive.
I have used both Hornady and Alpha brass in this rifle and haven’t noticed much difference between the two. I will say that my batch of Alpha brass was slightly softer than Alpha brass I’ve used in other calibers; you could feel a difference when neck turning cases. I’m unsure if that’s a batch issue, or something specific to their 6mm GT brass as a whole. As far as performance, there was little discernable difference. Oddly enough, the Hornady brass seemed to have slightly less case capacity than the Alpha; with most other cartridges it’s the other way around.
POWDERS — The 6mm GT was designed with Hodgdon Varget in mind, and that popular powder works exceedingly well in this platform. That said, the 6mm GT can work with a wide variety of powders, some yielding better performance than Varget.
I’ve tried a multitude of powders during my initial 6mm GT load development: Varget, Shooters World Precision, RL16, VV N140, H4350, and RL-15 to name a few. In my barrel, Hodgdon H4350 seems to deliver the best velocity/accuracy combination. SD and ES also seemed to be the lowest with H4350.
Load Development for the 6mm GT — Many Powders Tested
BULLETS — The most common 0.120″ freebore chamber allows for the majority of high-BC 6mm projectiles found in both F-Class and PRS. I had good luck with the pointed 107gr Sierra Match Kings (SMK), as well as the 110gr Hornady A-Tips in my rifle. For those looking to run the heavier 112-115 grain 6mm offerings, I believe GAP designed a 0.160″ freebore reamer that gets those bullets out of the neck/shoulder junction. Shown below is the 0.120″ freebore JGS reamer print:
SUMMARY — Good Cartridge with Much Potential
Generally speaking, I think the 6mm GT is a good little round. Some may not subscribe to this theory, but I believe some cartridges are inherently easier to tune than others. I’m not sure the 6mm GT is as easy-to-tune as a 6mmBR, 6 Dasher, or 6 BRA, but I don’t think it lags that far behind.
With relatively little trouble, I was able to find loads with both Varget and H4350 that would consistently shoot very well — 0.2 to 0.3 MOA. Moreover, I found the 6GT cartridge lives up to the velocity claims made by G.A. Precision. I was easily able to push the 110gr A-Tips to 2950 FPS, and the 107gr SMKs to low 3000 FPS range without any pressure signs, or unnecessary wear and tear on the brass.
As a fun test, I ran my 6mm GT rifle in a local 1000-yard F-Class match with the 110gr A-Tips, just to see just how well they would perform. Although wind conditions of the day and some E-Target issues prevented my 6mm GT rig from getting the better of the larger 7mm and .30-Cal rifles, the 6mm GT proved itself an accurate little round at distance. Here is a 1000-yard ShotMarker target:
After putting several hundred rounds through my 6mm GT rifle, I anticipate building another 6GT on a repeater action to give PRS a try. I think if you are looking for a dual-purpose rifle that can run tactical matches (with 100% feeding reliability), and can also be used for mid-range, F-Open Class competition, the 6mm GT would be a very good option.
About the author, Mike McCasland:
Mike McCasland is an avid shooter who competes regularly in F-Class matches. Based in Texas, Mike is the creator of the Texas Precision YouTube Channel. There you’ll find many videos covering reloading, gun projects, and marksmanship. Mike has done some notable product reviews including a comparison test of Micrometer Competition Seating Dies. To access Mike’s YouTube Channel, CLICK HERE.
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Bushnell Match Pro ED 15×56 Binocular with MRAD Reticle
Bushnell is now shipping its new Match Pro ED 15×56 binoculars, designed for precision and competition rifle shooters. These 15-power, high-magnification binoculars offer ED Prime glass and a proprietary, rotating Shot-Call MRAD reticle. This reticle allows fast shot calls and corrections — something important for PRS/NRL competition. Bushnell says these new 15×56 binoculars, when mounted securely, have “enough power to effectively replace your spotting scope with a wide field-of-view that puts less stress on your eyes and allows you to more easily observe projectile flight.”
Early prototype versions of the Match Pro ED 15×56 binocular have already proved their worth in PRS/NRL competition. Bushnell pro shooter Robert Brantley has used the Match Pro ED binocular in recent PRS matches where he’s won four consecutive Tactical Division titles. In this video, Brantley explains the key features of Bushnell’s 15X, reticle-equipped Match Pro ED binoculars:
“The new Match Pro binos offer the perfect setup for spotting and calling shots on the range,” said Brantley. “They offer … the ability to fine tune corrections with the Shot-Call reticle. It truly does offer the best of everything and I’m not ever going back to shooting without them.”
Two important features of the Match Pro ED binoculars are the Shot-Call reticle and BridgeSet Stabilizer. The offset MRAD reticle is designed for target sizing, ranging and follow-up shot correction. The reticle has a dedicated focus adjustment and can be rotated for leveling after IPD (interpupillary distance) adjustment. Users can lock in their preferred IPD with the integrated bridge-lock, which ensures the binoculars are set for quick use.
This unit has some cool features. The BridgeSet IPD stabilizer provides a barrel angle stop that keeps your inter-pupillary distance constant in the field. A first of its kind, the BridgeSet is like a zero stop for your binoculars. These binoculars also have dual adjustable diopters to keep both barrels perfectly focused. This is important because many folks have slightly different vision in their left vs. their right eyes.
Bushnell’s 15-power Match Pro ED binoculars boast fully multi-coated ED (Extra-Low Dispersion) Prime objective lenses and BaK4 Abbe-Koenig roof prisms with PC3 dielectric phase coatings to ensure 92% light transmission. These Match Pro ED binoculars also feature Bushnell’s EXO-Barrier for high resolution regardless of weather conditions. A rugged magnesium housing protects the internal mechanisms while IPX5 waterproof sealing shields the optics from moisture. Another very good feature is that you can mount a tripod adapter to either the front or rear bridges based on your preference. That’s handy. These binoculars weigh a hefty 56 ounces (3.5 pounds), so you’ll definitely want to mount them on a tripod.
Now in stock, Match Pro ED 15×56 binoculars are currently available for $699.99 at EuroOptic.com and other leading vendors. The Match Pro ED 15×56 binocular is backed by Bushnell’s 20-year Lifetime Ironclad Warranty. CLICK HERE to see full product profile on Bushnell.com.
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You’d like to protect your hearing, and maybe you’re a little curious about how your rifle might shoot suppressed. So you’re thinking of buying a suppressor (aka “can”, “moderator”, “silencer”). You can’t just get one off the shelf at Walmart. Acquiring a suppressor requires filling out paperwork and paying a Federal $200 Tax Stamp. Plus there is typically a pretty long wait. However, the good news is that suppressor ownership is now legal in 42 of the 50 American states — that’s 84%! For most American adults, getting a suppressor is legal, provided pass the required background checks.
States Where Suppressor Ownership is Allowed
Currently, the following 42 states allow private ownership of suppressors: AL, AK, AZ, AR, CO, CT, FL, GA, ID, IN, IA, KS, KY, LA, ME, MD, MI, MN, MS, MO, MT, NE, NV, NH, NM, NC, ND, OH, OK, OR, PA, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY.
Note: Even if you live in one of the states listed, you should still verify that owning a suppressor is legal in your area. Some states may have municipal- or county-based restrictions.
States Where Suppressor Ownership is Prohibited
Unfortunately, there are still eight (8) States that forbid private ownership of suppressors. The eight No-Go States are: California, Delaware, Hawaii, Illinois, Massachusetts, New Jersey, New York, Rhode Island. In these eight states, private ownership of suppressors (aka “silencers”) is forbidden. Hopefully that a few of those eight hold-out states will change their laws in the months ahead.
Looking Inside a Suppressor in Action
Popular YouTube Channel Smarter Every Day recently released a cool video featuring rifle suppressors with see-through acrylic sleeves. The team filmed shots through the suppressors using ultra-high-speed (110,000 frame per second) cameras. When played back in super-slow-motion, you can see the flame propagate through the suppressor and the bullet move through each baffle before it exists the muzzle. Watch the results in the video below — it’s mesmerizing:
See Through Suppressor in Super Slow Motion (110,000 fps) — Click Arrow to Watch:
Suppressors, On Average, Reduce Noise Levels about 30 Decibels
In an article for Ammoland, gunwriter Sam Hoober says that you can expect about 30 decibels (dB) of noise reduction from the average suppressor: “Looking at a few different products, SilencerCo attests their suppressors reduce the sound pressure of a 9mm gunshot to anywhere from 125.7 dB to 131.5 dB, depending on the model. Advanced Armament Co, another popular supplier, attests a 23 dB to 33 dB reduction or down to 127 dB. Liberty Suppressors, another manufacturer, attests a reduction of 24 dB to 38 dB, depending on model and other factors. In short, we can presume something on the order of 30 dB of attenuation as an average.”
Using that 30 dB number you can quickly discern that you’ll still need hearing protection — good hearing protection — when shooting any suppressed firearm (even a .22 LR). “Spikes of 130 dB and more can result in permanent hearing damage instantly”. Source: NRA Blog.
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Are you looking to get started in tactical/practical competitions? Or perhaps you already have have some PRS/NRL experience but want to upgrade your equipment and enhance your match results. Here are eight videos that can help you improve your game. These videos feature top tactical PRS/NRL competitors and George Gardner of G.A. Precision, considered one of the founding fathers of the PRS game. You’ll find other related videos on the Long Range Precision Shooters YouTube channel.
How Accurate Are The World’s Top PRS Shooters?
In this video, MDT put three top centerfire PRS shooters to the test, running them through some of the most difficult stages. The goal? To showcase the level of accuracy and precision these top shooters can achieve. From shooting off barricades to hitting targets from rooftops and rocks, these shooters demonstrate why they are considered among the best in the world.
Cartridge Choice for PRS and Tactical Competition
This video reviews many of the different cartridge options popular for PRS-style competition. The video examines pros and cons of various cartridge choices, focusing on accuracy, recoil, mag-feeding, and value for money. This segment features G.A. Precision owner/founder George Gardner.
Most top PRS shooters are using 6mm cartridges these days. These deliver excellent accuracy with lower recoil and cheaper bullet cost. Popular choices include 6 Dasher, 6 BRA, 6mm Creedmoor, 6XC, and the new 6GT cartridge, which is sort of a stretched version of a 6mmBR. It has a bit more case length for better feeding, and greater case capacity than a 6BR so you can shoot 105-108 grain bullets at 2950 fps with ease. That’s a popular Dasher accuracy node that the 6GT can achieve at somewhat lower pressures.
CLICK HERE for a full write-up on a 6GT rifle build by Mike McCasland (Texas Precision). This includes load development suggestions and a 6GT reamer print. The popular 0.120″ freebore chamber allows for the majority of high-BC 6mm projectiles. Mike had good luck with the pointed 107gr Sierra Match Kings (SMK), as well as the 110gr Hornady A-Tips in his rifle.
PRS Tactical Division — Rifle, Ammo, Optics, and Set-Up
In this video MDT Shooter Matt Stiner explains the basics of competition in the PRS Tactical division. The video covers rifle, cartridge choice, optics, and key accessories. He also explains how to set up your PRS Tactical rig for best results. In addition Matt talks about bullet and brass options.
PRS Ace Shows Skills Barricade Technique — with POV Video
This video features 2015 PRS Champion David Preston shooting the PRS Skills barricade. Dave Preston has been among the best in the nation running this PRS stage. Dave nearly always shoots 100% with the fastest recorded time. In this video you’ll see him successfully nail all eight shots in under 43 seconds. This includes a POV sequence (4:35 time-mark) showing the actual view through Dave’s scope.
The PRS Skills Barricade is an 8-round, 4-position stage featured at most PRS matches. It’s called a “Skills Stage” as it is run the same way at every national match and gives shooters the ability to compare skill levels based on hit percentage and speed. The target is a 10″ plate at 400 yards. There are four different positions, with two shots each. Most people run this stage in about 70 seconds, while Dave does it in the low 40s!
Know Your Limits PRS Stages — Pro Tips
This video showcases how 2018 Oklahoma PPS Champion Clay Blackketter approaches Know Your Limit Stages. With these particular type of stages you have to make judgment calls about your rifle’s accuracy and your ability to hold on target. You can boost your score by shooting the smallest target(s), but you risk losing points if you miss. Clay explains how best to manage a Know Your Limits stage.
PRS on a Budget — Converting a Basic Rifle for PRS Use
Top of the line rifles for competition are exceedingly expensive, but there is another option if you have a rifle in the safe that doesn’t get much use. Top F-Class shooter and wind coach Keith Glasscock notes: “I converted my .223 Remington varmint rifle into a Tactical class/PRS training rifle to save costs on ammunition and barrels so I can get better, faster.” Keith shows a very logical way to get started in the PRS/NRL game.
Bare Minimum: What You Need To PRS/NRL Competition
Like most shooting sports, PRS/NRL precision rifle competition can seem daunting once you start adding up the costs for the rifle, the optic, and all the important gear. We note the maximum price limit for “factory class” has risen steadily over the years, reaching $3000 currently. So even in the least expensive division, you can expect to put out a serious chunk of cash. This month, Dustin Sanchez talks with Brian Whalen about the minimum gear you need to start shooting long range and still be competitive.
1. Rifle (1 MOA capable)
2. Ammo
3. Bipod
4. Optic
5. Data Management (App, Kestrel, etc.)
“Road to the PRS” Episode One Presented by Kestrel Ballistics
Join Jeremy Flinn, the owner of Stone Road Media, as he begins Precision Rifle Series (PRS) shooting with the help of respected instructors and shooters. Follow along with Jeremy and Katie Godfrey of Kestrel Ballistics as they travel to eastern Pennsylvania to meet instructor Jordan Glassman, a renowned long-range shooting specialist and PRS beginners match instructor. He helps get Jeremy in preparation for an upcoming PRS Beginners Match.
This Saturday Video showcase was suggested by Boyd Allen.
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Jerod’s Tactical Trio
We’ve always liked the capacious, durable range boxes from 
George Gardner was kind enough to send us 50 pieces of Pre-Production Alpha 6GT brass for preliminary testing. Like the cases I formed from 6.5×47 Lapua brass, the Alpha 6GT brass will use a small rifle primer. Purchased direct from 
BRASS — The first thing you’ll find is cartridge brass choices for the 6 GT are rather limited currently. At present, the only commercial options are Hornady and 
SUMMARY — Good Cartridge with Much Potential
