I have done quite a bit of looking and have only found a graph of what factory Hornady match ammo ran at different lengths. You are using an out of date browser. 58 GRAIN BULLETS SECTIONAL DENSITY: DIAMETER: 0.243" 58 gr. Personally, I think this is the perfect choice for an AR Velocities for long, high BC bullets are perfect for long barrel life and excellent accuracy. Primer Pocket Swage Tool; Priming Tools; Shell Plates, Shell Holders & Bushings; Shotshell Accessories; Dies & Accessories . JavaScript is disabled. The 6mm Advanced Rifle Cartridge (638mm), or 6mm ARC for short, is a 6 mm (.243) caliber intermediate rifle cartridge introduced by Hornady in 2020, as a low-recoil, high-accuracy long-range cartridge, designed for use in the AR-15 platform at request of a specialized group within the U.S. DoD for its multipurpose combat rifle program. LP = Large Pistol . Shooter's Reference Shellholder Chart Lapua with their Scenar and ScenarL line offer 90- and 105-grain choices. They shouldve just left it at A.R.C. Shown for comparison are some popular 6mm cartridges, including the (1) 6mm ARC, (2) .243 Winchester, (3) 6mm Remington and the (4) .240 Weatherby Magnum. For a better experience, please enable JavaScript in your browser before proceeding. Thirty grains of Shooters World Precision Rifle produced the best group with that powder (.57 inch at 2,887 fps), though the bolt opened just a touch tightly for my taste. The rifle weighed 11 pounds, 7 ounces after the addition of a Burris RT-15 3-15x 50mm FFP 30mm scope held in Burris AR-P.E.P.R. Im ordering components and needed to know what to look for. The first set of data is loaded to the SAAMI maximum average pressure (MAP) of 52,000 psi, which is stated to be suitable for gas-operated firearms such as the AR-15 platform and its derivatives. NOTE: This 6mm ARC reloading data is intended for use in bolt action rifles safe for pressures up to 62,000 psi. 6mm ARC: Cartridge Design Today's testing using an 6mm ARC upper I built up with a 16" barrel (4 groove cut rifled barrel 1:7.5" twist) with a SAAMI 6mm ARC chamber: 26 gr of H4895, CCI BR4 primer, Berger 105 gr BT, Lapua reformed and trimmed 6.5 Grendel brass, 2.265" OAL magazine fed = 2453 fps - .505" 5 shot group - accuracy excellent. Hornady is an obvious first choice for selecting 6mm projectiles to load the 6mm ARC with. Dr. Dabbs tells us all about the weapons used in the his personal favorite war movie, Kelly's Heroes. View Reloading Essentials View Cartridge Cases, "It's the best all-around cartridge for the AR to date; better than the .223 Rem., 6.5 mm Grendel, 6.8 SPC and .300 Blackout, and evidently Hornady and I aren't the only ones who think so." These would have the best results if set off with match grade small rifle primers. Yes. If you already have an AR chambered in 6.5 Grendel, the ONLY thing you need to change is the barrel. Even with a flat-shooting 6mm target bullet, a difference of 30 fps in muzzle velocity can translate to 7 inches of vertical at 1,000 yards, turning what might have been a good hit into a clean miss. Commercial 6mm ARC loads feature bullets selected to deliver ideal performance for hunting, match shooting, and personal protection applications. According to the calculator a 1:7 twist barrel is necessary to adequately stabilize that bullet. The neck was set back, allowing more room for long-for-caliber 6mm projectiles in standard AR magazines. Hornady is an obvious first choice for selecting 6mm projectiles to load the 6mm ARC with. Smallest group being about .25 inch. It may not display this or other websites correctly. Conceivably, this means. 2829 0 obj <> endobj This will provide you with some Hornady brass to get you started reloading. Patrick Sweeney shows us his PCC Competition SIG Sauer MPX. TESTED: Sierra 6mm 107gr MatchKing Bullets - Ultimate Reloader I just loaded them to 2.25 COAL to be mag friendly. The rifle includes a built-in inclinometer (bubble level), a RAT Rail accepting bipods and other accessories and a V4 spigot mount and thermal-image optic bridge. Fits standard AR15-platform rifles (4) not available. Your main problem with small pistol primers is the cup thickness and the free float firing pin in an AR style rifle. So, while others wait to see what ammo options will populate their local gun store, a savvy reloader can be well on his way to making the Hornady 6mm ARC a staple on his reloading bench. It is NOT for use in AR-15 style (gas gun) rifles. You must log in or register to reply here. Features match-accurate Hornady bullets held to the tightest tolerances in our test lab. The case length of 1.49 results in a lot of bullet space (.77 or 3.16 calibers) which will allow loading projectiles with very long ogives and great external ballistic performance. Loading the longest-for-caliber .308 bullets provides equal wind drift and velocity retention, but at the cost of heavier recoil. Patrick Sweeney gives some history on this interesting pistol. The 6mm ARC as a possible military round doesnt interest me so much as the promise of a serious hunting round. What Is the 6mm ARC Cartridge? Sierras 95-grain Tipped MatchKing is a favorite 6mm varmint bullet, with a great BC for weight and improved velocities compared to heavier 6mm bullets with similar profiles. No idea honestly. Brought out by Hornady just a few months ago, this moderate-sized round is based on the 6.5 Grendel and shares similar rim and body dimensions. The CMMG Endeavor AR-15 proved capable of fine precision, including this .59-inch group with a combination of Bergers 108-grain Elite Hunter and 29.5 grains of Power Pro 2000-MR. AR-15's) and kept to a maximum pressure of 52,000 psi. Small rifle magnum primers, like the CCI 450, will certainly work in the 6mm ARC cartridge. My load above (#5 and7) is gas gun. What Federal primers can I use for 6mm ARC? All Firearms News subscribers now have digital access to their magazine content. _gaq.push(['_setAccount', 'UA-6323545-2']); Also another where the guy says he hasnt seen big temp swings. 6mm arc Staball Match Barnes 105 Match Burner. Brownells uppers, barrels, bolts, and magazines, 6mm ARC: 6.5 Creedmoor of the Gas Gun World, 6mm ARC Cartridge SAAMI Specs, Components, Videos, 6mm ARC Cartridge Featured on Shooting USA Tomorrow, 6.5 Grendel is Approved as SAMMI Cartridge Alexander Arms Gives Up 6.5 Grendel Trademark, Sunday GunDay: Beyond .223 Rem Alternative AR Cartridges, Product Review: Hornady 6.5 Grendel Brass. Warfare unit, this cartridge has lots of potential as a commercial offering as well. They currently have 4 choices, 3 commercial offerings and one for LE use. That, and the longer tube, resulted in average 300-fps velocity gains. 6mm ARC Cartridge SAAMI Specs, Build Requirements, Videos 30-degree case shoulder. (function() { Like Greg talks about in the 1st of his video. Remember though, Berger bullets will be the longest you will use, so verify your barrel twist. How are you forming your brass from the Starline? The other rounds were in the pic were from a clean barrel and also the wind was gusting hard. Depending on how you look at it, Hornadys new 6mm ARC is either a necked-down 6.5 Grendel, or yet another version of the 6mm PPC. Powders mirrored those used for AR loads, with the addition of Ramshot TAC, Alliant Power Pro Varmint, Hodgdon Varget, Shooters World Precision Rifle (extrapolated from 6mm Remington BR data) and IMR-8202 XBR. From an AR, Hodgdons LVR and CFE 223, Alliants Power Pro 2000-MR and Accurates A-2520 give top velocities combined with consistent accuracy. (Photo credit: Hornady) Hornady has the following to say about the cartridge: With this rifle, Hodgdons CFE 223 was the hands down accuracy winner with 28 grains producing a .28-inch group at 2,800 fps, and 29 grains a .52-inch group at 2,835 fps. The 6mm ARC gives hunters the ability to successfully hunt varmints and deer. Accuracy is there from 30.8g-31.4g, Shot another group at 100m yesterday. 0 What kind of dies are you using? Remember though, its not as simple as running a case into a 6mm ARC sizing die. Also, there could be neck tension issues if those lighter bullets are seated too far out. The powder savings is only a couple tenths of a grain, but that can add up. I like the cartridge but the dam name sucks. Just got a 20" proof stainless barrel and I have been very happy with it it. By the numbers, the 6mm ARC case head measures 0.440, just 0.005 smaller than a 7.6339 case. If you like Vihtavouri powders, then consider N140 and N540. ga.src = ('https:' == document.location.protocol ? No plans to crimp. Maximum pressures in the turn bolt were established at 62,000 psi. You can also follow our Facebook Page for regular articles and resources. The 6 GT Is a New Top Cartridge in the Precision Rifle World - Outdoor Life They do have a thinner cup, at .020, so if you have a heavy striking free float firing pin, you may want to consider something like the CCI #41s. Check out our selection below and make Midsouth Shooters your reloading headquarters! https://www.handloadermagazine.com/6mm-arc. In June 2020, Hornady introduced the 6mm ARC, a new SAAMI cartridge optimized for AR-platform rifles*. PDF Primer Size and Bullet Diameter Chart - Graf & S You will want something fairly clean burning and temperature stable. When developing a new load for your 6mm ARC, or any caliber, you should start with smaller amounts of powder and pressure and work up gradually. For an ordinary AR-15 rifle chambered for the .223 Rem/5.56mm NATO, a new barrel, magazine and bolt are required to convert to the 6mm ARC. 6mm Creedmoor Large Rifle vs Small Rifle Primers?? - Sniper's Hide Forum Look at your specific load data and see if what it specifies. Sort By: Items Per Page: Item Total: (1) 0 - 1 6mm GT Unprimed Rifle Brass 100 Count 047-6GTBRASS100 | GA Precision $75.00 $0.75 Per Piece : 0.405 Power Pro 2000-MR, which also performed well in the AR, proved exceptional with this bullet: 30, 31 and 32 grains producing .44-, .53- and .33-inch groups at 2,754, 2,786 and 2,940 fps, respectively. These sets will not only have the required full-length sizing die to maintain proper case length, but will also completely size the body. Overall, the 6mm ARC delivers optimum all-range performance and barrel life. Its been consistently about $2 per round for a 6mm rifle while I can get 5.56 rounds for about 70 cents a round or less. Lapua Brass, Ammunition and Bullets | Powder Valley RCBS - 38 . 6mm ARC vs. 6.8 SPC It's a matter of the primer cup being allowed to flow backward thru the gap. This article looks at theory and our experience, and should not be considered recommendations about primers for the 6mm ARC. Figured Id start a thread for the 6mm ARC. My 95s just came in and at 2.25oal I'm at 100 thousandths jump. Also, when test firing, load 1 in a magazine, then try with 2 in the magazine, then 4 or 5, before you try a full magazine. Check out the new for 2022 Walther Pro SD with James Tarr and Jens Krogh. All the hardware you need is currently available at Brownells. Gas gun data includes 52,000 psi maximum pressures. We're proud to carry both small quantity specialty brass and affordable bargains like breakdown brass to the large quantity bulk brass by the case. [5], The cartridge makes use of 6mm (.243 in) bullets, which are known for their high ballistic coefficients due to the high sectional density with less drag and better energy retention at extended ranges. 2854 0 obj <>stream Tom Beckstrand, Guns & Ammo Read More, "If youd like to keep the same rifle platform while gaining an increase in energy and long-range performance without much more recoil, then the 6mm ARC is for you." Finally, a compressed load of 29.5 grains of Alliant Reloder 15 printed .45 inch at 2,900 fps. Initially tested and fielded by US Special Operations forces, the 6mm ARC utilizes efficient, high-BC bullets to deliver unprecedented long-range performance with a wide variety of available bullets. 6mm ARC - Practical Reloading | Page 4 | Shooters' Forum Primer Size Chart . 50 shots and accuracy goes to crap. 6mm Lee Navy .243 BLR 6mm PPC .243 SR 6mm Remington .243 LR 6mm TCU .243 SR 6mm-06 Springfield .243 LR 6mm-284 Winchester .243 LR Well, regardless of how commercially accepted this new entry becomes, if one were to acquire a rifle or build one of their own, reloading your own 6mm ARC ammo will guarantee it remains in your collection. Please note that this article looks at research and testing done by a variety of sources. Its a good bet that those companies already loading 6.5mm Grendel will be the quickest onto store shelves. PDF 6mm ARC (Gas Gun) - Hornady Only one way to find out! I asked my personal gun smith, who also taught me to reload his opinion on small rifle vs small rifle magnum and this is what he said about it: Ive tried both. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. CONTACT US All Rights Reserved Wilson Combat. Share the post "6mm ARC Cartridge SAAMI Specs, Build Requirements, Videos", Tags: 6.5 Grendel, 6mm ARC, 6mm Creedmoor, 6mmAR, Brownells 6mm ARC, Hornady. It included an SV Brake (58-24 threads), an SLR adjustable gas block, forged 7075-T6 M4 upper and AR-15 lower, CMMG RML15 M-Lok hand guard, CMMG oversized ambidextrous charging handle, MAGPUL PRS stock, Geissele Automatics SSA 2-Stage trigger and a 10-round detachable magazine. Yes, some reloading data are made with small rifle magnum primers. There are older veterans, like the SST and Interlock designs up. There isnt enough force to set off a factory 6mm ARC round, but that may not be true if you have small pistol primers. If they cost the same and your manual is calculated in magnum primers, Id use magnums. @(aO 0{!{:8:@T @1fpQ{3W=97,_:Xr"Ck&efS cH Se I ran the Hornady 108gr ELD through the Berger bullet stability calculator after looking at targets fired by various people with 7.5 and 7.7 twist barrels. As with all reloading, if you decide to try this proceed with caution. Bullets of the . There is room to produce inexpensive range fodder, and create some home brewed match winners. [9] The 6mm ARC utilizes the same bolt head size as the 6.5mm Grendel, and 6.5mm Grendel-compatible AR-pattern box magazines have also been used successfully with the 6mm ARC. Bolt gun data appeared simultaneously with gas gun light-bullet data, listing bullets from 58 to 108 grains. 18" barrel with rifle +1. For general information, see 6mm ARC Info Page. Moving load to a Speer 100 Grain Spire-point. Both our 6GT and 6mm ARC have 1:7.5" twist barrels. Right now you can also sign up for free. The case volume will easily allow for up to 30 grains of powder, but please wait for qualified load data to be available. Not a fan of that watch button in the upper right of threads? (5) Auto 4X4 Shell Plate not available. Initial Hornady load data was developed in a Noveske N4 AR-15 with an 18-inch barrel and 1:7.5 rifling twist. })(); To comment on a post, click Post Title or "Comment" Link. Power Pro Varmint excelled once more, with 26.5 grains resulting in a .37-inch group, 27.5 grains a .54-inch group and 28.5 grains a .46-inch group at 2,678, 2,786 and 2,817 fps, respectively. MFG #: 13519. Theyre a match grade primer, so theyre a more expensive option, especially if youre just planning on using them for plinking, but they work. Not crimped either. Narrowing ARC powders to a short list is relatively easy. These would likely be a better fit regarding the cartridges overall length. Then, there will be some neck trimming which needs to be done. 6mm ARC Everything You Want to Know About It - The Mag Life Accurate A-2520 produced a .43-inch group at 2,886 fps, while Power Pro 2000-MR shined again. The Hornady 6mm ARC | Midsouth Shooters It took 4 months to come in. 6mm ARC: 6.5 Creedmoor of the Gas Gun World You can over pressure the case quick so be careful. 6 mm Bench Rest Norma. All the other required components are already on the market for 6.5 Grendel rifles. Hornady launched the 6mm ARC with three factory loads: a 103-grain ELD-X Precision Hunter at an advertised 2,800 fps, 105-grain BTHP Hornady Black at an advertised 2,750 fps and the 108-grain ELD-Match load at a stated 2,750 fps. The shoulder angle was set at 30 degrees. The 6mm ARC is a cartridge designed to be a much faster and harder hitting round than the 5.56, but still capable of being shot from the AR-15 platform. Im using RCBS SB/TC dies and just lubing and running.

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