Cartridge experimentation was in its heyday in the 1950s, and it was a rare cartridge case that didnt get shortened, blown out, or necked up or down. Comparing 6mm ARC to 6mm CR is is apples and oranges again. Standard practice is to start tweaking burn rates, bullet weight and weighting factor to make calculated muzzle velocity match actual. H4895 with 5-shot groups from the high .5s to 1.0 MOA. Twist rate is 1:7.5 to stabilize the long 105- to 108-grain high B.C. ELD-Match, and Berger 115-gr. The problem is that Hornady, which developed the 6 mm ARC, made a slight alteration to the case length so that it would be compatible with very long 6 mm bullets that have a high BC. was necked up to 6mm and called the 6x47. Nearly two dozen rifle makers are already chambering for the round, including Browning, Proof, Christensen, Barrett, Mossberg, and Howa. I also measured five fired but not resized factory 6mm ARC cases. The 6mm ARC is a 5.56-platform compatible cartridge, similar to the 6.5 Grendel. 6mm ARC vs 6.5 Grendel. Would love to get this thing shooting consistently under .5 with enough speed to reliably ring steel at 1000. Introducing the Silencerco SCO15 Lower Do We Need Another AR-15 Lower? pathfinder76 #14942491 06/04/20. Lower velocity means less flame and heat for longer barrel life. Given all the focus on the Armys NGSW (Next Generation Squad Weapon) program when the Hornady 6mm ARC was introduced it was pretty easy to mix the two up. It is based on the 6.5 Grendel case, and time will tell if it, too, becomes one of the great ones. The 6 ARC was consistent, precise, and repeatable both on cold shots and groups but was about the middle of the pack with the rest. 6MM ARC AR-15 Barrels for Sale at Joe Bob Outfitters! I think the point of the arc is that it works in an ar 15. !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)? I tested dozens of loads, mostly with benchrest bullets, and the rifle shot well. Facebook; Twitter; Pinterest; Related Articles. The 6 ARC can be built on mini actions such as the CZ 527, Howa Mini, Sako AI. Then the AR-15 platform exploded and the game changed some more. Second, it was chambered in the delightful Winchester Model 70 Featherweight, which was a major factor in the .243s huge success. For this load, I shot a group of 3 shots on the chronograph, and observed the following: (better chrono data coming in future stories, I had limited components and time). A new 6mm round blossomed in 2017, and it has already taken a position in the Great category. You won't have to fiddle with necking/reforming in 6XC. All Rights Reserved, Borden's 7mm Rem. Material connection (partnerships) information available at http://ultimatereloader.com/about/, 6mm ARC is so new that as of the writing of this article, published load data did not exist! Did the 6 ARC outperform the .223? Alaska. was everything the .244 Rem. After that, it was the 6.5 and 6CM show. While it did well the clear winner was the 6CM, high BC and extra velocity are hard to overcome at this range. The 6mm Rem. remains a runaway hit to this day. No factory rifles or ammo was available, but for a while, Federal offered nickel-plated 6x47 cases. Not a contest. It hits way above its weight class. Straight-wall rounds like Winchesters little 350 Legend may be the only centerfire rifle cartridges legal for deer hunting in some states, so of course theyre going to be popular. Only a few metric calibers have been really popular in the United States6.5mm and 7mmso the Great 6mms are relatively few in number. The IRMT upper locks the barrel in place with unparalleled rigidity. Factory ammunition at normal prices (if that exists anymore) suitable for defense, duty, target, and hunting is more available than similar calibers after decades of use. Given this or your typical AR10, no contest, the 6 ARC is much easier to carry. The original 6 mm/.244 Rem is basically the .257 Roberts/7x57 case necked down, while the 6 mm BR Rem/Norma (only slightly different case specs between them) are much shorter cases. The rifles Barrett supplied for the DoD are top-notch, but they are just a modified REC-7 DI. It suffered no vertical stringing. Or anything? I chose to start with Varget because of what I read about 6mm PPC, and I have a lot on hand! Many shooters necked the BR case down, and a 6mm version ultimately became the 6mm BR Remington. If this rifle is any indication all it took was a barrel, bolt, and magazine swap. Click here to view the cartridge and chamber print on the SAAMI website. This is exactly what we would expect. Some have stated that it offers comparable ballistics to larger 6 mm cartridges like the 6mm Creedmoor and .243 Winchester, but out of a smaller cartridge, however this simply is not true when comparing muzzle velocities between them. August 14, 2022. Above: 6mm ARC case capacity measured 33.96 grains H2O. Campfire Outfitter . Each rifle ships with one 10-round magazine. I hired a Mossberg in 243 Winchester to take this multi-tined TX Hill Country whitetail with a single shot. This colored our perception of lower velocity rounds. Real Performance Results, From-Scratch Experimental Load Development, 6mm ARC Landing Page at Midsouth Shooters Supply, Subscribe to Ultimate Reloader Reloading Blog by Email, NEW DAA Infra-Red Low Powder Sensor (Hands-On). 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. Five shot rapid-fire was not bad. It stays supersonic farther downrange than the 308 Win. You never know for sure, but its not a failure out of the box like so many others. Tested, selected and fielded by a specialized group within the U.S. DoD for its multipurpose combat rifle program, the versatile 6mm ARC does much of what larger cartridges can and everything that smaller cartridges cant. Head diameter is .441, a bit less than the .535" head of the short-lived 243 WSSM which was a lot faster than the ARC. was not, and the .243 Win. There is a lot of hoped for or imagined history related to the 22 BR and 6 BR cartridges. Mag. If I was gonna go to a 6mm cartridge I would either do 6x47lapua because I already brass and all I need is a smaller neck bushing, or I would go all in on 6br. The Hornady 6mm ARC takes the 24-caliber into record territory the slowest muzzle velocity of any commercial cartridge propelling .243 bullets. I followed up with three at 300 meters and a 600 Meter shot on a 22 x 16 silhouette steel. It is based on the previous 22 Nosler and has two features to make it compatible with AR-type rifles: a slightly rebated rim that is the same diameter as the .223 Remington and an overall cartridge length set at 2.26 inches, the same as other AR rounds. An eighteen-inch barrel, maybe even a. It would also be used as a deer rifle for new shooters (small deer, sitka blacktails). and puts more impact splash on steel plates than any .224 rounds. Share. Important to note that Quickload reports the chamber pressure using the combination of components above is 3900 PSI over SAAMI spec and is therefore a dangerous load that should not be used. However, the 6mm ARC will service the military and civilian shooters more often in AR-15-type rifles, meaning barrel lengths will likely be closer to 18 inches. Even with the cost of the Proof Research barrel it doable. The Mossberg 500 Pump Action Shotgun is one of the most popular home defense shotguns on the market. : 2.095" G1 B.C. The Model 70 .243 Win. It is based on the .308 Winchester case, necked down with no other change. How do lower velocity cartridges improve long-range shooting? But because 6mm arc is currently $34.95 per box and 6mm CM is $31.50 there is not enough cost difference to worry about since I don't reload yet . Interestingly enough, my history with 6mm rounds began with the 6mm Remington. Some tactics never die, they just get regenerated. But at the same time were seeing the 6.5 Creedmoor and 6.5 Grendel; the 6.8 Rem. bullets. Given the need for a centered shot on a 6 roundish target from 100 to 300 meters, I would take it without hesitation. Hold for elevation never changed, 4 mils at the top garnered hits at from 4.2-4.7 mils each time, misses were generally wind. The 6mm ARC is a more aerodynamic bullet than the 6.5 Grendel. Will it become my 1000 yards rifle, maybe, it is working against the 224V and the jury is still out and will be until I get my hands on their TAP round, Ill keep you posted. Maximum Cartridge Overall Length is 2.26. 600m: Out of ten cold shots at 600 meters 7 hit home, pretty impressive. ZEV cleaned house using the David Tubb DTR reticle. Due to the lower MAP, the performance of 6mm ARC ammunition loaded to gas-gun pressures will, on average, be less than firearms loaded to bolt action pressures when using the same barrel length. Joseph Von Benedikt shows his custom 500 and how well it shoots. The bullet diameter of each caliber is the same at .243". Not only did the rifle have a nice checkered American walnut stock, but also the light barrel was a handy 22 inches long. Its design uses propellants efficiently. The powder charge I used then is lost to history, but the bullet was a Speer 90-grain SP. And one may be all you need to justify a new rifle in a new, low velocity chambering. for decades and have experienced no odd problems with it. With more case capacity, the 6mm BR can drive the heavier, higher BC bullets needed at long distance. My guess is that Hornady is banking on a broader market with hunters and enthusiasts, once more ammunition is available. Shots were aimed from a bi-pod, the rifle on the bench with me standing behind it. It doesn't need a .308 sized action to work. Both were termed Pointed Soft Point Core-Lokt bullets. The 6.5 Grendel was made by modifying the 220 Russian parent case. Its why the 308 is absent from this test. A memorized trajectory curve combined with a ballistic reticle or turret dialing could compensate. L. to R. are 223 Rem., 6.5 Grendel, 6.8 Rem. It is versatile, in that it is suitable in both ARs and mini-bolt guns for hunting, personal protection, and target shooting. In the 1970s, I had a Remington Model 700 BDL so chambered, and I took my first Texas whitetail with it. Then theres Hornadys new 300 PRC, Weatherbys 6.5-300 Weatherby, and several more modern speed demons. Take a look at any good ballistics program Hornady and Federal both have an easy-to-use program on their websitesand you'll see the advantage of the better B.C. GD. Lets now realistically compare the 6mm ARC vs. five of its perceived competitors. MV consistency matters a great deal at extended ranges. 260RemGuy: I began a five year long search (bribery fest!) I had a 20 AR-15 to test with, so I had to do some math :). SuperCub. No math test required. This data and these techniques can not be assumed to be safe. The .223 75-grain bullet, by contrast, drifts more than 15 inches at that range, and the ARC's advantage becomes more pronounced at longer ranges. 6mm ARC: Fact or Fiction? My speed is significantly slower ( 50 FPS) than Gavins at 2552 FPS with an SD of 6. wasn't as big a fan of his 4 oz trigger but all in all I want one someday don't know enough about the 6 arc to comment on it . I tested a bolt-action handgun in 24 Nosler last year and was so impressed with the round that I had a Remington Model 700 originally in .223 Rem. (roughly .530 to .540 B.C. So, the 6mm ARC outperforms any magazine length 5.56x45mm NATO load simply through a combination of sheer horsepower and more efficient projectiles. I had a 6mm Norma BR built on a Remington 700 and I could not get it to feed from the magazine. Eight reasons to embrace the Hornady 6mm ARC and other low-velocity cartridges. ), 6mm ARC brass (new), 6.5x47 (New) Sierra 6mm Gamechanger 90gr and 6.5 130gr Gamechanger, Update on my BadRock 6mm ARC bolt gun and new Hornady Podcast, Custom 700 in 6mm Norma BR (ARC, Timney, Bartlein) *Price drop*. The Hornady 6mm ARC is at its best with long for caliber, high BC bullets like this Berger 108-grain Elite Hunter. Mag., the 6mm-204 essentially recreates the 6x47. Many handloaders like the 6mm Rem.s sharper shoulder and longer case, and while its not nearly as popular as the .243 Win., it is nonetheless a great 6mm round. Give a Gift ELD-X . He gave it a 32-degree shoulder and called it the .243 Rock Chucker.. Ballistic coefficients are about equal, with a slight edge going to the 6mm 108 ELD . Hornady Precision Hunter 6mm ARC 103 Grain Jacketed Soft Point Centerfire Rifle Ammunition, 20, SBT (Save 10%) $2.15/Round. Her 6mm Creedmoor rifle is light and handy and shoots like a house afire, and recoil and muzzle blast are modest. I fall into the latter category. The 243 has a case length of 2.045" compared to the 1.49" of the 6mm cartridges. However, 25.3 inches of drop at 400yds is by no means terrible. 6.8 SPC The 6mm ARC has more match bullet options and is a better long-range performer. Dave Bahde Dr. WT? The 24 Nosler is a terrific performer, so dont let its small size fool you. Aug 11, 2020 . Mag. The 243 has a case length of 2.045" compared to the 1.49" of the 6mm cartridges. Years ago I authored an article titled Lies, Damn Lies, and Ballistics. I shot out to 700 yards next with .4 to .5 MOA accuracy and ended the day putting 3 out of 3 shots on the 900 yard gong in a .4 MOA group. 2023 Outdoor Sportsman Group. I don't shoot past 300 and dead is dead. 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. Guns & Ammo's first sample rifle chambered in 6mm ARC was a Ruger AR-556 MPR with an 18-inch barrel. Most Popular. The old 243 Winchester can beat that by about 300 fps. The 6mm ARC does what much larger cartridges can and everything that smaller cartridges can't. It delivers substantially better ballistics than the 223 and offers a much lighter gun/ammo system with 30% less weight than the AR-10/308 Win system. Some smaller capacity, low velocity rounds are tailored for sub-sonic, low-report firing for clandestine military engagements. The general shooting public loves them for control of vermin like feral hogs. With the 6PPC you have to turn necks and fire-form the cases from smaller 220 Russianbrass. range.) There are probably better choices in a bolt gun, The 6 BR Rem has been around for a while but not fifty years, yet. Again using QuickLoad, I developed the following load: Here I saw velocities averaging 2,631 FPS. The cartridge was developed by Noslers Mike Lake, and it was approved by SAAMI in 2017. ARC stands for "Advanced Rifle Cartridge." The caliber is 6mm or .243. Or it fits the extra-short AR-15 platform rifles beloved and preferred by many shooters. with a collective yawn and flocked to the equally new and elegant Winchester Model 70 Featherweight in .243 Win. H2O, and a 6mm BR, around 39.0 gr. Once we could pinpoint exact distance to target, maximum velocity didnt matter as much. Its 26-inch barrel made the rifle a bit heavy for toting over hill and dale, plus the 1:12-inch twist limited bullet weights to 90 grains or lighter. has much kick to start with. And just in case some hunter wanted to knock off a deer with his .244 rifle, the company also offered a 90-grain loading. Hey Gavin and fellow Ultimate Reloader Fans: I had a chance to do more testing today as I finally received some Hornady factory 105 grain Black ammunition. Velocity is 2,827 fps, and out of my Browning A-bolt II, it groups into 1.10 inches. it looks like the 6mm ARC is 1.490 and the grendel case is 1.52, so not much of a shortening if really at all. Taurus has redesigned this sporting pistol for performance. This increased size means the 243 has a case capacity of 53-54.8 gr H2O. Posts: 11,077. Ultimate Reloader, LLC and Making With Metal can not be held liable for property or personal damage due to viewers/readers of this website performing activities, procedures, techniques, or practices described in whole or part on this website. Barrel-length is an issue. Short, fat cartridges leave room for long necks that hold long, high B.C. bullets of the 6mm Creedmoor. The overall length of the 6mm ARC is 2.26 inches which is almost half an inch shorter than . This means that during a 1,200-yard flight to the target, gravity and wind will pull and push on the 6 mm ARC between one- and three-tenths . Posts: 38 Threads: 10 Joined: Aug 2020 #1. In very simple terms, the 6mm ARC's exterior ballistics exceed . As the dust settled and reality set in this dissipated a bit. Arguments amongst experts (real and self-delusional) spewed forth with ferocity. Remington surmised that the .244 would be used mostly as a varmint cartridge, with only an occasional application on deer-sized game, so the initial factory ammo was loaded with a 75-grain bullet. That wont change and logistically the 6 ARC is still at baby steps. Also 6X47 has also interested me. Both bullets produce deer-slaying accuracy. Distance is its forte and with its 2020 introduction and ability to flatten the trajectory curve, the 6mm ARC might ought to have been called the "Corona cartridge.". The 24 Nosler is exceptionally accurate and mild mannered and has cleanly taken numerous midsized big-game animals. Subscriber Services. (Ret.) Played at other stuff with the 6 ARC but that was the bulk of the testing. All gunsmithing procedures should be carried out by a qualified and licensed gunsmith at their own risk. Joined. Heres a quick look at the best of this cohort. can exceed it by 500 fps and the 240 Weatherby by 600 fps. A World Record Attempt and everyone is out at the range shooting and practicing. [7] What the 6mm ARC does offer though is almost comparable velocities and ballistic performance, but out of a compact cartridge that has lessened perceived recoil and fits into the standard AR-15 length actions. Its a long-distance for any of these and conditions were anything but ideal. No surprise there since it is about the same weight as the 6 ARC and both used Proof Research barrels. As Jackie says there's a big difference in the cases. Which it does pretty well within those limitations. .563) from wobbling, the 6mm ARC will need at least a 1:7 twist. Thread Modes. This is, after all, a rifle forum and accuracy matters! ZevTech, 16 Proof Research .223 Wylde barrel, Leupold Optics Mark 6, 3-18 with a David Tubb DTR reticle and Black Hills 77 Grain TMK. The 6x45 is the .223 Rem. WT?, Tactical Time Lord. For example, the data in the Hornady 11th Edition Manual for an 18 in (457 mm)-barrelled AR-15 platform firearm was on average 200-300 ft/s (60-90 m/s) less than the data for the 24 in (610 mm)-barrelled CZ 527 bolt action rifle. Unlike the WSSM, the Hornady 6mm ARC was engineered around a long, high B.C. Powder selection is easy: Just stick with CFE 223 and all will be right with the world. 100 Factory ammo? For hunting purposes I expect 100 grain bullets & less will be preferred in this platform based on my experience. They run the gamut from tiny benchrest numbers to those with larger cases that essentially duplicate many factory rounds. continues to ride the crest of the 6mm-caliber wave, the tried-and-true 6mm Rem. In a 10-mph crosswind the 6mm ARC 108-grain bullet drifts 10.9 inches at 400 yards. Legend, 450 Bushmaster. That bullet and Hybrid 100V powder recently grouped into a remarkable 0.44 inch in a Ruger Model 77R. of Israeli Defense Forces, joins David Fortier for an exclusive interview for Shotgun News. Absolutely, but not significantly better than the 224V with the 90 grain SMK. VLD, Hornady 108-gr. The ARC seems to be knocking on the heels of a BR. Those who are going to like or prefer the 6mm ARC will likely appreciate the 6mm ARC for its utility in either the AR 15 platform & or the mini action bolt action rifles. Thanks in large part to new, long-range shooting competitions, our acceptance of lower velocity accelerated even as muzzle velocities decelerated. You will not find better quality and consistency when it comes to Lapua. 6mm ARC has the potential to be the most versatile cartridge of all time for a few reasons: (1) 6mm ARC can handle projectiles anywhere between 55 and 115 gr. bullets straight and seated above the powder reservoir. You'll need a new barrel, bolt, and mags. Like the grendel though you probably don't want to run high pressures on an ar bolt though. Thank you for this timely video. After forming some cases I shot Berger 105 hybrid targets over 27.5 grs. Accuracy was good, with one group I captured on camera (see video) measuring 0.750: I decided to see how fast a 95 grain bullet could be propelled by the 6mm ARC, so I turned to some 6mm Berger Classic Hunter bullets I had on hand, and Ramshot TAC powder.

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