In June 2020, Hornady introduced the 6mm ARC, a new SAAMI cartridge optimized for AR-platform rifles*. The new 6mm ARC is basically a 6.5 Grendel necked down to 6mm, with the shoulder moved back around .030″. That pushed-back shoulder does reduce case capacity (and velocity), but we assume Hornady did that to create a shorter, proprietary chamber so people could not simply neck-down Lapua 6.5 Grendel brass, as has been done for years with Robert Whitley’s outstanding 6mm AR wildcat.
What Is the 6mm ARC Cartridge? The 6mm ARC cartridge is a new SAAMI-spec cartridge based on the 6.5 Grendel case necked down for 6mm bullets, with the shoulder moved back 0.030. Yes it is designed to run in AR15-platform rifles. You’ll need a new barrel, bolt, and mags. If you already have an AR chambered in 6.5 Grendel, the ONLY thing you need to change is the barrel. Everything else — bolt, magazines, gas system – is compatible with 6mm ARC.
▶ Official SAAMI Cartridge (not wildcat)
▶ Fits standard AR15-platform rifles
▶ Fits Short/Mini action bolt rifles
▶ Efficient short, fat case design
▶ 30-degree case shoulder
What Do I Need To Shoot the 6mm ARC?
Faxon and Ballistic Advantage are already producing barrels, with more manufacturers sure to follow. All the other required components are already on the market for 6.5 Grendel rifles. Aero Precision already offers complete 6mm ARC uppers.
If you’re converting a standard 5.56×45 mm (.223 Rem) AR15 upper to shoot 6mm ARC, you’ll need a 6mm barrel, a Type II 6.5 Grendel bolt carrier group, and new magazines. Some folks have suggested standard AR mags will work, but trust us, you want the magazines that have been designed for 6.5 Grendel. Most of the hardware you need is available at Brownells.
* While 6-6.5 Grendel shooters are known to run stout pressures, the new 6mm ARC cartridge has a relatively moderate Maximum Average Pressure (MAP) rating of 52,000 psi according to the official SAAMI specifications. For a variety of reasons, is wise to keep pressures in a semi-auto rifle moderate. Don’t chase the velocities you might get in a bolt-action gun.
Christmas is just a week away, so today we’re featuring a hand-picked collection of sixteen “stocking stuffers” for precision shooters. Some of these are recent inventions. All are handy items that you’ll use over and over again at the range, on your vehicle, and/or at your loading bench (so you’re allowed to buy them for yourself, even after Christmas).
B&T Industries BT62 Determinator — $7.95 ✔
The acrylic BT62 Determinator measures groups with laser-cut concentric measuring rings. Check group size quick and easy — simply place the Determinator over shot group. Adjust until one of the circles crosses the center of the two outer-most holes. That gives you the center to center group measurement (1.5″ maximum). Alternatively, you can measure edge to edge (of the farthest shots) and then subtract the bullet diameter. Cool tool for gun guys. The supplied lanyard also glows in the dark.
MAXUS Reloading Scale Kit — $16.99 ✔
Here is a VERY affordable compact scale for use at home or at the range (with battery power). Though it costs under $20, the MAXUS Digital Milligram Scale (#ad) has earned good reviews and should be precise and repeatable. This high-precision digital milligram scale set comes with calibration weight and other reloading accessories. And numbers are easy to read with its large backlit LCD display. NOTE: This MAXUS Scale has dual power functionality — it can run with batteries or USB cable. It can read grains, ounces, grams, and other weight types.
Lyman Powder Scale Pan and Case Funnel — $6.99 ✔
The Lyman Powder Pan/Funnel saves reloaders time by combining the powder-receiving pan and funnel into one unit. With this combo tool reloaders can pour powder directly into the case without having to fumble with a separate funnel. That’s smart and efficient and just $6.99 on Amazon (#ad). RCBS makes a similar powder pan/funnel ($13.99 on Amazon #ad) with a slightly different case-neck section. You may want to try both to determine which works best for your cartridge brass.
Surveyor’s Flagging Tape (for Wind Indicators) — $1.69 per Roll ✔
Allen Camouflage/Black Neoprene Scope Cover — $11.47 ✔
Here’s a great gift item for a hunter. This reversible Camo-pattern Neoprene Scope Cover fits scopes up to 15″ long and 56mm lens diameter. The cover cushions your scope and protects against moisture and scratches. Along with the $11.47 large version, Allen makes a 12″ medium camo scope cover, and a 10″ small version. NOTE: These covers are reversible with Mossy Oak Break-Up Country camo on one side (as show), and black on the other side.
SIG Sauer Foxtrot1X LED Lamp — $49.99 ✔
The SIG Sauer FOXTROT1X gun lamp works with Picatinny rails, SIG Sauer rails, and Glock rails without the need for adapters or modifications. It features dual, finger-actuated switches that allow for ambidextrous operation in both continuous and momentary modes. This $49.99 gun lamp features an efficient 450 lumens white LED that can run for 1.5 hours on a single CR123 battery. This rail-mounted light is compatible with most holsters designed for light-equipped handguns.
MagnetoSpeed RifleKuhl Barrel Cooling Fan — $60.00 ✔
Cooling your barrel with a compact fan can extend barrel life. This bright red RifleKuhl from Magnetospeed (#ad) is quite effective. The battery-powered impeller pushes cooling air down the barrel. It has a chamber seal for increased cooling efficiency while a neodymium magnet helps secure the device to your action. The RifleKuhl includes a belt/pocket clip and there is a Replaceable built-in 50 Micron air filter. The RifleKuhl costs $60.00 on Amazon.
Ludex Case Prep Multi-Tool with Internal Storage — $15.99 ✔
This handy Ludex Case Prep Multi-Tool can perform multiple tasks. On one end is an inside neck chamferer, with the outside chamferer/deburrer on the opposite end. Stored inside the tool are four (4) uniforming attachments for large and small primer pockets. This tool with all the attachments is $15.99 on Amazon.
Digital Display Timer with Big Buttons — $16.95 ✔
If you shoot in a discipline with time limits, or you time your firing strings during practice, having a reliable and easy-to-read timer is critical. We like this very affordable Digital Display Timer with both count-up and count-down functions. Just $16.95 on Amazon, this unit boasts an easy-to-read display and LARGE buttons making it perfect for F-Class, Palma, and other matches. This timer comes with both a built-in stand AND a strong magnet so you can position the timer conveniently.
This handsome red leather ammo holder secures twenty (20) rounds of .308 Win-size ammunition, in a handy plastic carrier. In addition there are loops for 2 more sighter rounds on the outside. This is a very nice gift for a target shooter or hunter. There is also a .223 Rem version in black leather. Both these leather ammo holders conveniently fit into a shooting coat pocket via a leather pocket flap.
Hoppes Pistol Cleaning Kit — $8.99 ✔
Right now, for just $8.99, you can get a nice Hoppes Pistol Cleaning Kit complete with solvents, cleaning rod with swivel handle, jags, patch holder, bore brush, and 50 patches. The fluids include 2 oz. of Hoppe’s No. 9 Cleaning Solvent, plus 2.25 ounces of Hoppe’s Lubricating Oil.
Wheeler Manual Trigger Pull Scale — $17.90 ✔
While we prefer a sensitive digital trigger pull gauge, it’s nice to have a manual back-up. And the Wheeler gauge is plenty accurate for pistols and most hunting rifles. The Wheeler trigger pull scale accurately measures trigger pull weight from 8 ounces to 8 pounds. It features an ergonomic handle for consistent direction of pull. The sliding indicator stays reliably on the maximum weight registered and high contrast pull weight increment marks are very easy to read. This spring-type trigger scale measures in 2-ounce increments and is accurate to +/- 2 ounces — plenty good for pistols and hunting rifles. Priced at just $17.90 on Amazon, this gauge has earned 91% four- or five-star owner reviews.
Sack-Ups 13.5″ Pistol Storage Sock — $8.49 ✔
Here’s an actual fabric sock that you can roll up and put in your Christmas stocking. Sack-Up knitted storage sacks are made from silicone-treated 100% natural cotton. The cotton’s wicking ability draws moisture off the gun, inhibiting corrosion. This $8.49 13.5″ Sack-Ups sock is a great choice for revolvers and metal-framed pistols. Midsouth also carries larger 36″, 42″, and 52″ Sack-Ups for shotguns and rifles.
With the shortages of powder and primers, many folks will be shooting more rimfire in 2021. While .22 LR rimfire rifles require less cleaning compared to centerfire rifles, you still need to maintain those rimfire barrels. We like Bore Tech’s Rimfire Blend Bore Cleaner, now $16.15 at Creedmoor Sports. This specially-formulated, ammonia-free bore cleaner can simultaneously cut through the layers of lead, wax, and carbon fouling. NOTE: After use you may have to shoot quite a few rounds before best accuracy returns.
Is the temp and humidity OK inside your gunsafe? With Hornady’s Govee Bluetooth Wireless Hygrometer Thermometer, you can check that easily. The unit measures temperature and humidity inside your safe, and then displays temp/humidity readings on your smartphone via a Bluetooth App. The unit has a good range in open rooms but you may have to get close to the safe to get a signal with the safe door closed. The sophisticated Govee Wireless Hygrometer Thermometer is now just $14.99 on Amazon (#ad).
BONUS — TACTICAL XMAS STOCKINGS, $15.99-$17.99 ✔
Don’t have a stocking to hold your small gift items? Then check out these cool, heavy-duty stockings. These Willbond Tactical Stockings are sold as a two-pack for just $14.99 – $17.99 on Amazon (#ad).Choose a pair in three different types: Classic Style (Camo and Black, $14.99); Bright Style (Bronze and Green, $15.99), and Stylish Style (Green and Black, $17.99). These Willbond Tactical Stockings feature Hanging hook, MOLLE straps, carry handle, outside draw pocket, side zipper, and Velcro USA Flag Patch. These stockings are sure to bring smiles to your tacticool family members and friends.
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Conventional brass jags work great — except for one thing. They can react to solvents, leaving a blue “false positive” on patches. In recent years, jag-makers have experimented with many different materials in an effort to cure the solvent-reaction problem. Today we have polymer jags, nickel-plated jags, and stainless steel jags. And the latest innovation is the aluminum jag from Dewey.
J. Dewey Mfg. offers a series of “Copper Eliminator” jags and brush adapters made from aircraft-grade aluminum with the same hardness as brass. Dewey claims that its aluminum jags will not become embedded with grit or particles that could harm your bore. At the same time, Dewey’s aluminum jags will not react to ammoniated bore solvents that can turn patches blue green when used with brass jags. Dewey aluminum jags are offered with either male OR female 8/32 threads. The $5.25 aluminum jags and $3.70 brush adapters are offered in a wide variety of calibers. You can order these products from Dewey Mfg. or Brownells.
Story Tip from Boyd Allen. We welcome submissions from our readers.
Each day, on Facebook, the NRA National Firearms Museum showcases something special from the Museum collections. A while back the Museum displayed a trio of snakes — three very special Colt Pythons. From bottom to top, these three prized wheelguns are: Colt Python serial number 2, number 3, and number 5. And yes, that is the original box for Python #2 (at bottom). The museum says such low serial number guns were typically produced for a company executive or key members of the gun design team.
Loved for their beautiful finish, nice balance, and great trigger, Colt Pythons have proven to be excellent investments. Since the Colt Python was first introduced in 1955, Python prices have gone through the roof. A pristine, LNIB early-era Colt Python can now command $4400.00 or more, more than 35 times the original price.
How much did a Python cost in 1955? You could purchase the handsome Royal Blue model for just $125.00! Factory-engraved models started at $245.00, according to this Colt advertisement from June, 1955:
History and Design Evolution of Colt Python Revolvers
You can see hundreds of other interesting firearms on the National Firearm Museum website, www.NRAMuseum.com. Or, if you’re lucky, you can see the collections in person. The NRA now operates three Museum locations: the NRA National Firearms Museum in Fairfax, Virginia; the NRA National Sporting Arms Museum in Springfield, MO; and the Frank Brownell Museum of the Southwest in Raton, NM.
One of our Forum members asked us the question: “Does anybody make a good range box with cradles for cleaning at the bench?” The answer is yes — the MTM model RBMC Range Box offers slide-in plastic cradles that provide a reasonably sturdy platform for a quick clean when you’re done shooting. The RBMC box also offers plenty of storage for jags, brushes, solvents, ammo boxes and other miscellaneous gear you need for the range.
Among the many range boxes available, the MTM model RBMC Range Box leads the pack in terms of versatility. It is rugged, it has plenty of storage space, and it doubles as a handy cleaning station. This Editor has used the MTM Range Box to clean rifles and as a “range expedient” rifle holder when adjusting scopes and tensioning action screws. It’s a good product that does the job and stands up to rough handling. The MTM Shooting Range Box is in stock now for $49.99 at Midsouth (green version).
Fitted Cleaning Cradles
The key feature setting MTM’s RBMC apart from most range boxes is the rubber-coated cradle system. Wide enough to fit a 3″-wide fore-arm, the cradles slide into vertical slots on either end of the box. This allows your range box to serve as a maintenance station. The RBMC is really pretty stable in this role, and the cradles won’t mark your stock. The cradles even feature slots on each side to hold your cleaning rods. The MTM Range Box is secure enough to stay in place when you’re brushing the barrel. However, if you’re working on a carpeted bench top, keep one hand on the box when running a cleaning rod through the bore, just to ensure the box doesn’t slide.
Versatile Upper Tray with Dividers
The MTM Range Box has two major components — the box base (with cradles), and a large upper tray with hinged top and carry handle. This large upper tray clamps securely to the bottom unit for transport. The top tray has a long section that holds cleaning rod guides, long brushes, grease syringes and the like. There are two, clear-plastic fitted divider trays. These will hold your patches and jags, plus comparators, ring wrenches, and other small tools.
MTM offers a black “tactical” Range Box for $50.71 at Midsouth. This black Tactical Range Box includes a special bracket that supports AR-type rifles through the magazine well. As show at right, this is red. However, some previous production models had black magwell brackets (see below).
What Might Be Improved
Though we really like the MTM Range Box, it’s not perfect. First, we wish the box was a bit deeper, to have added carrying capacity. The dimensions of the MTM Range Box are: 25″ long x 11.5″ wide x 8.75″ high. We’d like to see it 12″ high/deep to allow larger solvent bottles to stand upright and to provide more space to carry tools and shooting muffs. However, it is deep enough to hold the large 100-round MTM cartridge boxes that are popular with many shooters (see photo at right).
While we like the twin clear plastic dividers that fit into the removable top-tray, but we wish the dividers had individual hinged tops. This would keep small items more secure.
Are you looking to have some shooting fun this holiday season — perhaps having a fun day with the kids or grand-kids? Then check out the colorful, innovative Game Series of paper targets from Action Target, a leading manufacturer of steel targets and shooting supplies. These can be used in indoor ranges or outdoors in warmer climates where there’s no winter snow on the ground.
Inspired by arcade games, tabletop gaming, circus themes, and team sports, the new Game Series paper targets are designed to be engaging — to involve the shooter in a fun process, rather than just aiming at dots on paper. The sports targets let you enjoy Baseball and Hockey. The nostalgic arcade target designs capture the fun of an amusement park. Some targets, such as ‘Alien Invasion’ (above), feature fluorescent colors that “glow” when used indoors with black lights. You can even enjoy darts and billiards targets.
The selection of games is impressive — there are currently 18 different Game Series targets — really something for everyone. NOTE: These Game Series targets are not inexpensive. A single Game Series target costs $1.59. However, if you buy at least 100 targets (one or more types), the cost per target goes down to $0.87, a 45% savings.
This video shows a variety of Game Series Targets being used at an indoor range. You can see they are large, brightly colored, and fun to shoot.
Hornady sponsored shooter Jerry Miculek — Yamil Sued Photo.
If you are considering acquiring a revolver for fun shooting, self-defense, or competition, you should definitely watch this YouTube video. In this 23-minute presentation, legendary wheelgun ace shooter Jerry Miculek puts three .357/.38 SPL wheelguns through their paces. Jerry, one of the greatest revolver shooters in history, hosts a “Revolver Showdown” with three popular wheelguns: 1) S&W L frame (3″ bbl); 2) Colt Python (6″ bbl); and 3) Ruger Speed Six (2.75″ bbl).
Smith & Wesson Model 686 Plus, L-Frame, 7-rd .357 Magnum/38 SPL, 3″ Barrel.
Testing at 10 Yards and 50 Yards
In the video, Jerry shoots all three revolvers rapid-fire, double-action at 10 yards. Then he shoots the three guns single-action, slow-fire at 50 yards (starting at time mark 7:19).
After his range session, Jerry examines nine medium frame revolvers, comparing and contrasting design features. Jerry considers these factors:
1. Accuracy
2. Balance and Handling
3. Speed and Sureness of Trigger Return (watch video at 3:45″ re Colt.)
4. Reliability
5. Barrel Twist Rate
6. Strength of Construction/Durability
Jim Borden, the very knowledgeable owner of Borden Accuracy, provided an interesting historical insight about barrel fitting and the term “blueprinting”. Jim has posted on his Borden Accuracy Facebook page an explanation of the term “blueprinting” as it originally was used with respect to barrel/shoulder/lug fitting.
Barrel/Shoulder Fit and Blue-Printing
Jim told us: “Something often overlooked on barrel installation is the shoulder fit. Many are so overly obsessed with doing a crank-on fit of threads that the shoulder contact is overlooked. Full, solid barrel shoulder to recoil lug or action face is critical to optimum accuracy and precision.
Many years ago part of the ‘blueprinting’ of an action was the use of Prussian blue to ‘blueprint’ lug fit, thread fit, and barrel shoulder fit. It was a colloquial expression that had nothing to do referring to a blueprint or drawing of the action.” Bet you didn’t know that!
About the photo below, Jim noted: “the fuzzy look on the threads is a liberal coating of Never-Seez thread lubricant.”
Look carefully to see the Prussian Blue applied to the barrel shoulder, plus Never Seez on threads.
Some years ago, Forum Member Jeff R. (“aJR”) from Australia crafted a slick, handsome cartridge holder to use with his heavy Benchrest Gun. This is a simple, elegant design that would be relatively easy to build in a home workshop. Composed of two blocks of wood with parallel metal arms, the unit adjusts for height and block angle. Jeff tells us: “This is my new cartridge dispenser I knocked up in the shed. I wanted to get the record rounds up next to the action and this is adjustable for just about any gun/port configuration, right or left.” The cartridge caddy has ten round holes (for record shots) in the top wood block, stacked in two rows. The base piece has five holes for sighters, with the holes cut at an angle for easy access.
For the blocks, Jeff used “Jarrah” wood, a deep, red hardwood native to West Australia. Jeff says he did not stain the wood–what you see is the natural color, just sprayed with acrylic lacquer. A similar wood available in the USA is Satiné, also known as “Bloodwood”.
By the way, Jeff’s 1000-yard rifle shown in the top photo is worth mentioning in its own right. The gun shot a large 30-cal magnum wildcat cartridge and 17 years ago set many Australian BR records. The rifle features a tensioned barrel system, custom Magnum drop-port action, and a metal/composite stock. Click HERE for more info. There’s even a YouTube Video showing Jeff shooting his big boomer at 1000-yard match at Brisbane QRA.
Product Review by F-Class John
Case preparation is critical for precision reloading. One must trim cases, debur/chamfer case mouths, clean necks, spruce up primer pockets and do other important tasks. Complete case prep can involve many separate processes, each requiring its own tools. With each of those tools comes additional cost as well as the need for more storage and bench space. To make case prep easier, faster, and more convenient Lyman created the Case Prep Xpress (#ad). The Case Prep Xpress, introduced a few years back, combines up to five prep stages into one well-built, stable, versatile unit. Watch this video to see the machine in action:
The Case Prep Xpress features five (5) independently-turning spindles all with the common 8/32 thread. This allows you to attach multiple tools supplied with the unit PLUS many other screw-on prep tools. For our testing we started out using a variety of the 12 included tools and found they cover the majority of case prep tasks. Lyman supplies deburr and chamfer tools, pocket uniformers, reamers and cleaners, as well as an assortment of neck brushes.
The deburr and chamfer tools worked really well, creating beautiful bevels all while leaving a nice flat edge across the top of the neck which is critical for accuracy and brass life. We found the primer pocket cleaning tool did a good job, but for truly clean pockets we recommend using the primer pocket uniforming tool, which very efficiently removes even hard residues.
The benefit of having interchangeable heads is that you can add your own accessories. We like to use a bore brush with bronze wool wrapped around it for use inside our necks. This worked perfectly once we screwed it in. In fact, we couldn’t think of any 8/32-threaded accessory that wouldn’t work well on this machine. Another great design feature is how all the accessories are oriented straight up. This allows for perfect visual alignment of your cases onto the tools which is critical — especially when performing cutting operations such as primer pocket uniforming.
Along with the five power stations there are six female-threaded storage spots on the sides where tools can be placed to ensure they don’t get lost. We like this feature since there will be more than five accessories you want to use and having them easily available is a great feature. You can keep 11 tools right on the machine (5 on top, 6 on the sides). That way you don’t have to dig through storage bins.
The Case Prep Xpress has a removable front bin to hold brass shavings, and there are two circular trays on either side of the bin. In front is a long tray that holds the provided brush. This makes it relatively easy to clean off brass shavings and other debris from case prep processes.
SUMMARY — Versatile Case Prep Xpress Is A Good Value
For the money, Lyman’s Case Prep Xpress is tough to beat. It performs multiple tasks well while being stable and easy-to-use. Yes there are some multi-spindle prep centers that offer variable or fast/slow RPM spindles while the Lyman’s spindles are all fixed RPM. (See, e.g. the RCBS Brass Boss). However those other systems don’t include all the convenient on-board storage of the Case Prep Xpress, and are typically more expensive. The Lyman Case Prep Xpress sells for about $180-$199 “street price”. It’s currently on sale for $185.85 on Amazon (#ad). This makes the Lyman Case Prep Xpress a good value — it offers great versatility while saving space and saving money compared to buying five or more separate, powered tools.
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The 6mm ARC cartridge is a new SAAMI-spec cartridge based on the 6.5 Grendel case necked down for 6mm bullets, with the shoulder moved back 0.030. Yes it is designed to run in AR15-platform rifles. You’ll need a new barrel, bolt, and mags. If you already have an AR chambered in 6.5 Grendel, the ONLY thing you need to change is the barrel. Everything else — bolt, magazines, gas system – is compatible with 6mm ARC. 
MTM offers a black “tactical” Range Box for 
What Might Be Improved
Testing at 10 Yards and 50 Yards
Barrel/Shoulder Fit and Blue-Printing
