This X-ray photograph reveals a variety of suppressor baffle configurations:
Report by NSSF
Apparently, today’s shooters like the sounds of silence. Americans are buying and licensing more suppressors and other NFA (National Firearms Act) items than ever before. The number of NFA applications filed with the NFA Branch at ATF continues to rise. With a greatly increased staff of 25 Legal Instrument Examiners, the backlog of NFA forms has been whittled down from more than 80,000 to about 36,000. Much of the intense increase in interest in NFA items is focused on silencers. According to ATF’s 2011 Commerce in Firearms Report, as of December 2010 there were 284,087 lawfully registered silencers in the United States. As of March 2014, there were 571,750. That’s means the number of registered suppressor more than doubled in three and a quarter years. And 2015 will probably be a record year for suppressor sales.
A Brief History of Suppressors (aka “Silencers”)
Hiram Percy Maxim, the son of Hiram Stevens Maxim (inventor of the Maxim machine gun) created the first firearm sound suppressors. An early advertisement for his Maxim Silencer Company explained that the hot propellant gases from discharging the firearm “are made to whirl around inside the Silencer,” and cannot leave the silencer until they have slowed down enough to not produce a loud noise. Initially, silencers were inexpensive and easy to obtain. Before the adoption of the National Firearms Act in 1934, Mr. Maxim sold a variety of silencer designs priced from $5.00 to $9.50. These were shipped in the U.S. Mail, without restrictions. Things are much different today — to own a suppressor, one must obtain federal approval and pay a special tax.
Silencers consist of a few basic parts. The CTD Shooter’s Log explains: “The envelope is the cylindrical metal tube in which the other components are stuffed. Inside the envelope are the expansion chamber and baffles. The expansion chamber is a relatively big empty space surrounding the muzzle, and the baffles are like coffee cups stacked on top of each other with a hole drilled through the middle of them for the bullet to pass through. This is where most of the ‘magic’ happens within the silencer.”
Here’s an interesting project — using a second-hand barrel to upgrade an AR15. Our friend Erik Cortina decided to make his AR15, originally chambered in 6.8 SPC, into a 6.5 Grendel. Erik acquired a “pre-owned” 6.5-06 match barrel through our Shooters’ Forum. Erik inspected the barrel with a bore-scope and confirmed it was in good shape after the first few inches (past the chamber). The 6.5-06 barrel had more than enough length, so he trimmed off the chamber end, then contoured the barrel to fit his AR15. This is a smart way to upgrade a gun without spending $350 or more on a brand new barrel.
In the first video, Erik explains the process of converting his 6.8 SPC AR15 into a 6.5 Grendel: “I take the upper completely apart and pull barrel off which will be used to take dimensions for new barrel. The new barrel will be turned from an old competition heavy barrel. All the barrel reaming will be done using JGS reamers. I will also use JGS reamers to make a seating and F/L sizing die.”
In the second video, Erik contours the “pre-owned” barrel to fit his AR. He uses an old bolt-action 6.5-06 competition barrel and cuts it to 17″ long and contours it to fit his AR-15. The barrel is turned down on a manual lathe to .750″ outside diameter for the majority of its length in order to fit the gas system barrel block that is made for a .750″ barrel. After contouring, the barrel will be threaded and chambered.
If you missed out on some steller deals this past Friday, fret not. Brownells.com still has many products on sale through the end of the weekend. What’s more, you can save an additional 10% by using Code LCX for purchases of $150.00 or more. Today’s daily bargain is an Aero Precision AR upper for $69.99. That’s a steal. Combine that with a $199.99 assembled Bushmaster Lower Receiver (with stock) for a very affordable package. If you don’t own an AR platform rifle, this is a great way to get started.
Geissele Automatics, respected maker triggers and firearm accessories, is offering some very attractive specials on Black Friday and Cyber Monday. On Friday 11/27 get 25% AR triggers. On Monday get a complete Geissele AR 2-Stage Trigger (GS2) for just $115.00. These normally retail for $165.00, so you save fifty bucks. In addition to these great deals, you can get 50% off Geissele gear, and 30% off Reaction Blocks (used for assembling AR platform rifles).
If you own a Ruger Precision Rifle (RPR), or are considering purchasing one, you should watch this short video from Sniper’s Hide. The Hide’s head honcho, Frank Galli (aka “LowLight”), added some upgrades to his RPR, to enhance looks and ergonomics. Frankly we think the RPR is pretty good right out of the box. Our friend Gavin Gear of UltimateReloader.com is seeing near-half-MOA accuracy with his “box-stock” RPR in .243 Winchester. Nonetheless we know some RPR owners will want to swap barrels or otherwise “hot rod” their rifle. Here’s how it’s done…
Video Shows New Barrel, Stock, Grip and Handguards Installed on Ruger Precision Rifle:
Galli unbolted quite a few factory parts, replacing them with proven aftermarket components. That’s one of the advantages of the RPR — it’s modular nature allows the owner to make changes with simple tools. Off came the handguards, stock, and grip. While we’ve been fairly impressed with the accuracy of some RPR factory barrels, Galli decided to fit a custom barrel, courtesy Chad Dixon of LongRifles Inc. (LRI). All totaled, the new components cost more than the original rifle. Galli figures he now has about $2400 in the gun. A new RPR (if you can find one) will run you about $1100-$1200.00.
The new barrel was a good investment, but the other items could be considered indulgences. But we like the fact that Galli demonstrated how easily the RPR can be modified by anyone with basic mechanical skills. (The Ruger’s barrel-mounting system allows you to run a “Pre-fit” barrel with headspace set by clamping nuts.) CLICK HERE for details of the build.
New Components for LowLight’s Ruger Precision Rifle
Magpul MOE Grip
Magpul PRS Stock
Seekins Precision “Triangle” Handguards
LongRifles Inc. (LRI) Aluminum Bolt Shroud
Custom K&P “Pre-Fit” Barrel from LRI (chambered in 6.5 Creedmoor)
Weatherby’s new TacMark Rifles should be popular with long-range shooters (at least those with plenty of coin). We hope you like recoil — all three chamberings are powerful: .30-378 Wby. Magnum, .338 Lapua Magnum, and .338-378 Wby. Magnum. To handle these powerful cartridge types, TacMark series rifles have a beefy receiver with integral recoil lug, set in a CNC-machined aluminum bedding system. The bolt is interesting — it has nine (9) lugs and a 54-degree bolt throw.
The composite stocks are adjustable for length of pull (13¼ inches to 14¾ inches), drop at comb, and drop at heel. The stock also has a near-vertical pistol grip with a trigger finger depression and a wide, flat-bottom fore-end with a stud for bipod and/or sling. The TacMark (11.25 lbs w/o scope) comes in black while the TacMark Elite (11.75 lbs w/o scope) is finished in High Desert Camo with black accents.
The $5000.00 TacMark Elite features a hand-lapped 28″ Krieger cut-rifled barrel*, fitted with a large muzzle brake. The Range Certified (RC) TacMark Elite is accompanied by an Oehler Ballistic Imaging System printout signed and certified by Ed or Adam Weatherby, verifying the accuracy. The Elite is guaranteed to shoot sub-MOA for three shots (and we suspect it can do a lot better than that).
The less expensive ($3600.00) TacMark also boasts a 28″ barrel — one of the longest barrels currently available on a factory rifle. This should be good for a little extra velocity. Both the TacMark and the TacMark Elite feature Weatherby’s Mark V action and Weatherby’s new LXX trigger, which is user-adjustable for pull weight down to 2.5 pounds. The Mark V TacMark and TacMark Elite rifles will be available through the Weatherby Custom Shop.
* A features list on the Weatherby website shows 26″ barrel length for the Elite. However the actual specifications show the barrel to be 28″ for both TacMark and TacMark Elite. You should verify barrel length before ordering.
The prestigious GAP Grind tactical match took place 16-18 October, at the K&M Shooting Complex in Finger, Tennessee. Here’s a “sizzle reel” video showing highlights from this year’s match, which drew talented competitors from across the nation. Held in association with the Precision Rifle Series (PRS), this year’s Grind features a Pro/Am format with professional and amateur competitors aiming for individual and team honors.
Watch GAP Grind 2015 Video (Loud Soundtrack):
Lots of Action, with 20+ Stages
The GAP Grind is a challenging, “high tempo” match with minimal down-time between stages. This year, over the course of 20+ stages, competitors each fired 200+ shots at a variety of steel, paper, moving, and reactive targets out to 1,200 yards. Targets varied in size and difficulty based on distance and time allotted. Most stages included “stressors” — i.e. time limits or required movement(s).
Here’s something that should interest tactical and PRS shooters. Nick Gebhardt has written a detailed review of the KRG Whiskey 3 Chassis for Snipers Hide. The Whiskey 3 Chassis (W3C) from KRG is a modular system for a Rem 700, Tikka T3, or Badger 2008 barreled actions. Borrowing heavily from the SAKO TRG design, this chassis offers good ergonomics, with adjustable cheekpiece and buttplate. The W3C is affordable, letting you transform your Rem 700 or Tikka into a “Poor Man’s TRG”. The Whiskey-3 is available in both fixed ($939.00) and folding ($1299.00) versions.
Reviewer Nick Gebhardt Praises the KRG Whiskey-3 Chassis:
Kinetic Research Group (KRG) has been producing the W3 Chassis for several years, and it is a superb choice for anybody looking for an extremely high quality stock. The W3 chassis is machined out of 6061-type aluminum, which is aircraft-grade and quite durable. KRG utilizes a combination of extrusions for rough shape and CNC machining to final dimensions for the fore-end and backbone of the chassis. The remainder of the pieces are CNC-machined from solid block.
I have been using this stock on my business rifle for a couple months and have nothing but high praise for it. The adjustability of the stock without tools is a major advantage while allowing customers to test my rifle, as we can fit the stock to each individual shooter easily and rapidly. One of the nicest features on this stock is the excellent Limb Saver recoil pad which is very soft and absorbs recoil nicely. The butt pad is also adjustable up and down as well as for tilt, up to about 15 degrees to either side.
If you are in the market for a chassis system and appreciate high quality machining, fit, and finish then you would be well-served with the W3C stock from Kinetic Research Group. They also make a less costly chassis, called the X-Ray, which is a polymer non-folding version very similar to the W3C. For More information, visit KineticResearchgroup.com.
The prestigious GAP Grind tactical match runs this weekend, 16-18 October, at the K&M Shooting Complex in Finger, Tennessee. The 2014 GAP Grind drew a huge turn-out, and this year’s Grind promises to top that — with more competitors and even tougher challenges. Held in association with the Precision Rifle Series (PRS), this year’s Grind features a Pro/Am format with professional and amateur competitors aiming for individual and team honors.
Lots of Action, with 20+ Stages
The GAP Grind is a notoriously challenging, “high tempo” match with minimal down time between stages. Over the course of 20+ stages, competitors will fire 200+ shots at a variety of steel, paper, moving, and reactive targets out to 1,200 yards. Target vary in size/difficulty based on the shooter’s position, distance, and time allotted. Most stages include “stressors” — i.e. time limits or required movement(s).
2014 GAP Grind Highlights Video:
Want to see what a “GAP Grind Experience” is all about? Then watch this video from the 2014 Grind. You’ll see a lot of movement through a wide variety of shooting positions. This ain’t no benchrest match, that’s for sure…
GAP Grind Guns by Giddings
Shelley Giddings, a skilled shooter of both firearms and cameras, attended the 2014 GAP Grind last week. While there, Shelley snapped some cool images of state-of-the-art tactical rifles. Here is a Giddings Gallery of Grind Guns. You can find more GAP Grind pix on Shelly’s Facebook Page.
Click any photo below to see a full-screen version.
In this video Bryan Litz of Applied Ballistics offers tips on Big Bore shooting (i.e. .338 caliber and above). Bryan offers advice on bullet selection and he explains the challenge of handling the blast, noise, concussion, and recoil of big boomers such as the .416 Barrett and .50 BMG.
Bryan goes big … very big, shooting a monster .50 BMG bullpup.
Watch the recoil pulse shove Bryan backwards at 1:40 time-mark:
Big Bore Basics — Tips for Shooting Big Boomersby Bryan Litz
There are some unique things to consider with big-bore shooting. One is bullet design. For long-range shooting you want high-BC bullets. You get high BC from heavy bullets and bullets that have low drag. The interesting trade-off in big calibers is that there are a lot more lathe-turned solid bullets in copper and brass available than there are in the smaller calibers. You’ve got bullets that have slightly lower drag profiles but they are made of materials that are slightly less dense (than lead) so they are relatively light for their caliber. With that trade-off, the BCs might not be as high as you think for big calibers, although the bullets are heavy enough that they carry a lot of energy.
Energy really has a lot to do with shooting these big-caliber rifles. As with any kind of shooting, the fundamentals of marksmanship are the most important thing. However, it can be hard to maintain good fundamentals (e.g. trigger control and sight alignment) when you’re burning 100 grains of powder. There’s a lot of concussion (you want a muzzle brake no matter what your cartridge is above .338). It certainly can be challenging with all the muzzle blast and all the energy coming out of the barrel.
For long-range shooting with big bore rifles, you are still looking for the same things that you want with smaller-caliber rigs. You want a high-performance bullet, you want consistent ammunition, and you want a good fire solution to be able to center your group at long range. Basically you’re just dealing with the challenges that the high energy brings, and being smart about your bullet selection.
In the video above, Bryan is shooting the DesertTech HTI bullpup. This rifle can shoot four (4) big bore chamberings, with barrel conversion kits for: .375 CheyTac, .408 CheyTac, .416 Barrett, and .50 BMG. These can be quickly swapped in the HTI chassis, which employs an internal barrel-clamp system.
This X-ray photograph reveals a variety of suppressor baffle configurations:
