August 15th, 2019

Money-Back Bonanza — 12 Summer/Fall Rebate Programs

summer Factory rebate programs

We’ve found a dozen great discount/rebate programs. These specials can save you big bucks on reloading components, ammo, or a new firearm. Some of these rebates are worth $100 or more. For example you can save $100 on a new Remington shotgun, Savage rifle, or Kimber pistol. Note: most of these promos are good through October, but some expire in September or even August — so check the dates.

remington rebate savage rifle rebate
CCI primers rebate Taurus pistol 22 revolver rebate discount
springfiled pistol magazine rebate Minox j.p. sauer rifle rebate 50% off
Federal range day ammo .223 Rem rebate hornady 500 get loaded free bullets rebate
savage msr AR rifle rebate Sig sauer pistol rebate 2019
speer ammo reloading components 2019 rebate Kimber pistol handgun rebate
Permalink Bullets, Brass, Ammo, Handguns, Hot Deals, News No Comments »
January 5th, 2018

GUN TECH — How to Build a Truly Accurate AR-Platform Rifle

AR-X AR15 Upper

A lot of claims are made about accuracy for AR-platform rifles, but much of that is just “sales talk”. But if you want a truly accurate black rifle, there are some key upgrades that, collectively, can transform a plain jane AR into a true tack-driver. Here’s an article by a genuine AR expert that will help you identify those components that really make a difference — the parts that can deliver true “match-grade” accuracy. Built right, a modern AR can deliver half-MOA accuracy with handloads. In this article, Robert Whitley of AR-X Enterprises explains how that’s done.

In our Shooters’ Forum, one member recently asked: “What makes an AR accurate? What parts on an AR can really affect accuracy — such as free-floating handguards, barrels, bolts, bolt carriers?” Robert Whitley posted a very comprehensive answer to this question, based on his experience building and testing dozens of AR-platform rifles. Robert runs AR-X Enterprises, which produces match-grade uppers for High Power competitors, tactical shooters, and varminters.

AR-X AR15 Upper

Building an Accurate AR — What is Most Important

by Robert Whitley
There are a lot of things that can be done to an AR to enhance consistent accuracy, and I use the words “consistent accuracy” because consistency is a part of it (i.e. plenty of guns will give a couple great 5-shot groups, but won’t do a very good 10- or 20-shot groups, and some guns will shoot great one day and not so good on others).

Here are 14 key things we think are important to accuracy.

1. Great Barrel: You’ll want a premium match-grade barrel, well-machined with a good crown and a match-type chambering, true to the bore and well cut. The extension threads must also be cut true to the bore, with everything true and in proper alignment.

2. Rigid Upper: A rigid, heavy-walled upper receiver aids accuracy. The typical AR upper receiver was made for a lightweight carry rifle and they stripped all the metal they could off it to make it light to carry (which is advantageous for the military). The net result are upper receivers that are so thin you can flex them with your bare hands. These flexible uppers are “strong enough” for general use, but they are not ideal for accuracy. Accuracy improves with a more rigid upper receiver.

3. True Receiver Face: We’ve found that truing the receiver face is valuable. Some may argue this point but it is always best to keep everything related to the barrel and the bore in complete alignment with the bore (i.e. barrel extension, bolt, upper receiver, carrier, etc.).

4. Barrel Extension: You should Loctite or glue the barrel extension into the upper receiver. This holds it in place all the way front to back in the upper receiver. Otherwise if there is any play (and there typically is) it just hangs on the face of the upper receiver completely dependent on the face of the upper receiver as the sole source of support for the barrel as opposed to being made more an integral part of the upper receiver by being glued-in.

AR-X AR15 Upper5. Gas Block: You want a gas block that does not impose pointed stress on the barrel. Clamp-on types that grab all the way around the barrel are excellent. The blocks that are pinned on with tapered pins that wedge against the barrel or the slip on type of block with set screws that push up from underneath (or directly on the barrel) can deform the bore inside of the barrel and can wreck the accuracy of an otherwise great barrel.

6. Free-Float Handguard: A rigid, free-float handguard (and I emphasize the word rigid) really makes a difference. There are many types of free-float handguards and a free-float handguard is, in and of itself, a huge improvement over a non-free-float set up, but best is a rigid set-up. Some of the ones on the market are small diameter, thin and/or flexible and if you are shooting off any type of rest, bipod, front bag, etc., a rigid fore-end is best since ARs want to jump, bounce and twist when you let a shot go, as the carrier starts to begin its cycle before the bullet exits the bore.

Savage MSR 10 Long Range

7. Barrel Contour: You want some meat on the barrel. Between the upper receiver and the gas block don’t go real thin with a barrel (we like 1″ diameter if it’s workable weight-wise). When you touch off a round and the bullet passes the gas port, the gas system immediately starts pressuring up with a gas impulse that provides vibrations and stress on the barrel, especially between the gas block back to the receiver. A heavier barrel here dampens that. Staying a little heavier with barrel contour through the gas block area and out to the muzzle is good for the same reasons. ARs have a lot going on when you touch off a round and the gas system pressures up and the carrier starts moving (all before the bullet exits the bore) so the more things are made heavier and rigid to counteract that the better — within reason (I’m not advocating a 12-lb barrel).

8. Gas Tube Routing Clearance: You want a gas tube that runs freely through the barrel nut, through the front of the upper receiver, and through the gas key in the carrier. Ensure the gas tube is not impinged by any of them, so that it does not load the carrier in a stressed orientation. You don’t want the gas tube bound up so that when the gas tube pressures up it immediately wants to transmit more force and impulse to the barrel than would normally occur. We sometimes spend a lot of time moving the gas block with gas tube on and off new build uppers and tweaking gas tubes to get proper clearance and alignment. Most gas tubes do need a little “tweaking” to get them right — factory tubes may work OK but they typically do not function optimally without hand-fitting.

9. Gas Port Tuning: You want to avoid over-porting the gas port. Being over-gassed makes the gas system pressure up earlier and more aggressively. This causes more impulse, and increases forces and vibration affecting the top end and the barrel. Tune the gas port to give the amount of pressure needed to function properly and adequately but no more.

10. Front/Back Bolt Play: If accuracy is the game, don’t leave a lot of front/back bolt play (keep it .003″ but no more than .005″). We’ve seen factory rifles run .012″ to .015″ play, which is OK if you need to leave room for dirt and grime in a military application. However, that amount of play is not ideal for a high-accuracy AR build. A lot of front/back bolt play allows rounds to be hammered into the chamber and actually re-formed in a non-consistent way, as they are loaded into the chamber.

11. Component Quality: Use good parts from a reputable source and be wary of “gun show specials”. All parts are NOT the same. Some are good, some are not so good, and some aftermarket parts are simply bad. Don’t be afraid to use mil-spec-type carriers; by and large they are excellent for an accuracy build. Also, remember that just because a carrier says “National Match” or something else on it does not necessarily mean it’s any better. Be wary of chrome-plated parts as the chrome plating can change the parts dimensionally and can also make it hard to do hand-fitting for fit and function.

AR-X AR15 Upper

12. Upper to Lower Fit: A good upper/lower fit is helpful. For quick and dirty fit enhancement, an Accu-Wedge in the rear helps a lot. The ultimate solution is to bed the upper to a specific lower so that the upper and lower, when together, are more like one integral unit. For the upper receivers we produce, we try to get the specs as close as we can, but still fit the various lowers in the market place.

13. Muzzle Attachments: Don’t screw up the muzzle (literally). Leave as much metal on the barrel at the muzzle as you can. People like to thread the muzzle for a flash hider, suppressor, muzzle brake, or some other attachment, but if you really want accuracy, leave as much metal as you can there. And, if you have something that screws on, set it up so that it can be put on and have it stay there without putting a lot of torque and stress on it right where the bullet exits the bore. If you are going to thread the end of the barrel, make it concentric with the bore and make sure what you screw on there is as well. For all muzzle attachments, also ensure that the holes through which the bullet passes through are dead true to the bore. Many aftermarket screw-on things are not so good that way. Anything that vents gas should vent symmetrically (i.e. if it vents left, it should vent equally right, and likewise, if it vents up, it should vent down equally). Uneven venting of gas can wreck accuracy.

14. Quality Ammunition: Ammo is a whole story by itself, but loads that are too hot typically shoot poorly in an AR-15. If you want accuracy out of an AR-15, avoid overly hot loads. Shown below are test groups shot with four (4) different uppers, all with moderate loads. These four uppers all pretty much had the same features and things done to them as explained in this article, and they all shot great.

AR-X AR15 Upper

Robert Whitley
www.6mmAR.com

Permalink Gunsmithing, Tactical, Tech Tip 2 Comments »
January 18th, 2017

SHOT Show Day One — New Products

Kelbly Rimfire Anschutz  PRS F-TR trainer

Here are new Rimfire Cross-Trainer Rifles from Kelbly’s. These feature Anschutz .22LR rimfire actions in full-size, competition stocks. This is a great offering for F-TR, prone, and long-range competitors looking to train with less expensive rimfire ammo. Kelbly’s will sell these as complete rifles with rimfire actions bedded in fiberglass stocks.

SHOT Show, held every year in Las Vegas, is the largest gun show in North America. Thousands of exhibitors showcase hosts of new products — rifles, pistols, shotguns, optics, stocks, reloading tools, bullets, brass, powders, hunting accessories and much more. This is the ultimate “candy store” for gun guys, with literally “miles of aisles” and countless products on display. Here are some of the more interesting items we saw during Day One of SHOT Show.

Howa HCR Chassis Rifle
All decked out in a Camo Cerakote finish, the new Howa HCR Chassis rifle was an eye-catcher. Designed for PRS-type competition, the HCR features a modular aluminum stock with a separate buttstock section with adjustable comb and adjustable length of pull. The HCR will be offered in four chamberings: .223 Rem, .243 Win, 6.5 Creedmoor, and .308 Win. There will be standard and heavy barrel options with 20″, 22″, and 24″ lengths. The rear of the stock accepts AR-type furniture (for those guys who need to customize). This new rifle will be sold in Black or Multicam Cerakote finishes. A package will be offered with Nikko Stirling 4-16x50mm scope and EGW 20-MOA, one-piece base and rings.

Howa HCR Tactical PRS Rifle Modular 6.5 Creedmoor

New Viper PST Gen II Scopes from Vortex
The versatile Viper PST series can work for many disciplines — Target Shooting, 3-Gun, Hunting, or Precision Long Range. The new second generation PSTs offer many improvements, with four new models for 2017: 1-6x24mm, 2-10×32mm, 3-15×44mm, and 5-25×50mm: Vortex offers a wide magnification range with its 2017 line-up of Viper PSTs. These new scopes offer tall tactical turrets and side-focus parallax adjustment with integrated illumination. To ensure reliable return-to-zero, all new models feature the patented RZR Zero Stop from the Razor HD 5-20×50 riflescope. Reticles include Vortex’s new EBR-4 and EBR-2C with MOA or MRAD stadia to match your turrets. First Focal Plane reticles are available on select models.

Vortex Viper PST Gen II Optics Scope

Savage AR10-Type MSR in 6.5 Creedmoor and .308 Win
Our friends Ed and Steve (aka the 6.5 Guys) visited the Savage booth to take a look at the new Savage MSR Long-Range model, an AR10-type modular semi-auto rifle with a Magpul PRS Gen3 buttstock. The 6.5 Guys report: “Savage’s new MSR 10 Long Range Rifle is chambered in 6.5 Creedmoor or .308 Win. It appears to be a terrific option for those wanted to compete in the new PRS Gas Gun Series. It is built on a compact frame with a non-reciprocating side-charging handle that is particularly useful for left-handed shooters. The Blackhawk AR Blaze™ two-stage target trigger was light and crisp. It features an upgraded Savage barrel, with 5R rifling and a Melonite QPQ finish. Read more new practical/tactical product reports at www.65guys.com.

Savage MSR Long Range AR10 PRS Gas Gun

New Accurate No. 11FS Low-Flash Pistol Powder
Western Powders showcased a new Accurate powder that delivers 90% less muzzle flash, while still offering good consistency and accuracy. Accurate No. 11FS (for Flash Suppressed) is designed for magnum pistols, and small rifle rounds such as the Hornet. The advanced flash-suppressing formula dramatically reduces muzzle flash in many large pistol cartridges. Notably, this Accurate 11FS was specifically designed to work with the .300 Blackout cartridge.

Accurate No. 11FS Powder Pistol Low Flash Suppressed Magnum

Enhanced Bluetooth Connectivity for Kestrel
At the Kestrel booth, we learned that Kestrel will be offering an enhanced LiNK Bluetooth low-energy enabled protocol that will allow wireless connections with a greater variety of devices. This will allow Kestrels to share data with Bushnell, Wilcox, and Vectronix Laser Rangefinders, Steiner LRF Binoculars and many other devices. This kind of connectivity allows Kestrel windmeters to be more versatile than ever.

Kestrel LiNK Low Energy Bluetooth LRF connectivity wireless

Big Boomer Brass from Peterson Cartridge
For those who shoot the .408 or .375 Cheytac, sourcing top-quality brass has been a challenge in the past. That’s changed with the introduction of premium Cheytac brass from Peterson Cartridge Company. Along with the new Cheytac brass, Peterson produces quality casings for other large rifle cartridges including: .338 Lapua Magnum, .300 Winchester Magnum, and 7mm Rem Magnum. Peterson’s brass offerings for smaller match cartridges include: 6.5 Creedmoor, .260 Remington, .308 Win Palma (Small Primer Pocket), and .308 Win Match.

Peterson Cartridge Brass Cheytac .338 .408 .375 Magnum

Permalink Gear Review, New Product, Optics 2 Comments »