They have given us both the 6.5 Creedmoor and 6mm Creedmoor within the last decade which have been extremely popular for hunters and target shooters alike. Hornady, sensing a need for something in the middle after seeing a lot of 6mm wildcat cartridges, has introduced the 6mm ARC. No experience with the Creedmoor and probably never will since it can't give me anything the 6mm Rem and 6XC don't already give me. This load will no doubt find favor with long-range competitors running gas guns. I think the grendel lacks case capacity to utilize the heavy, high BC bullets needed for 1k. It is based on the 6.5 Grendel case, and time will tell if it, too, becomes one of the great ones. 6mm ARC is HERE! Since my lgs has 6mm ARC factory ammo in stock and I have 105gr and 108gr pills for my 6mm Creedmoor reloads, I figured why not? Remington changed the twist rate to 1:10 around 1958, but it was too late; the damage had been done. 6 Creedmoor barrel length and velocity. The Rem has a slightly higher velocity typically. This is "6mm ARC vs the Creedmoors" by Hornady Manufacturing on Vimeo, the home for high quality videos and the people who love them. It offers the same stability factor as the industry-leading 105gr Hybrid Target and is a direct replacement for 1:8” twist barrels. You would still be able to fire the ARC from the 6mm … The 6mm creed looks like it gets around 2800fps (I originally typo’ed 2600fps) in a 16” barrel. The standard rifling twist for 6mm Creedmoor match rifles is 1 … At left is .308 Winchester, next 6.5 Creedmoor, then 6mm Creedmoor. The 6mm Creed is anout .030 longer than the 6XC. I have no 6mm experience at all, just researching. Hornady just officially announced the 6mm ARC, or Advanced Rifle Cartridge, for the AR-15 platform.The new cartridge is similar to a number of wildcat loads based on 6.5 Grendel necked down to 6mm. Competing smallbores .22 Nosler and .224 Valkyrie at the small end offer speed, while redheaded stepchild 6.5 Grendel offers better ballistic coefficients. 6mm GPCC 108 8.5 2830 1600 -176.2 49.4 1920 614 450 6.5mm GPCC 130 10.5 2600 1450 -213 55.3 1951 607 501 M80 Ball 147gr 15.8 2800 1277 -215.2 72.8 2559 532 415 Our 6mm bullet easily beats both the 308 and 5.56 in Every Single Category except muzzle energy, where it only loses to the 308. This time Bill started with a 24″ Proof Research stainless steel barrel on a Howa action. The bc’s on the heavy 6.5 bullets are in another league from the 6mm. 243 Win vs 6mm Creedmoor vs 6mm Rem Any thoughts on these as long range target cartridges? So in realistic Terms for comparisons sake they are nearly identical with the ARC maybe getting a 1 gr advantage and the .047 height advantage. I like 243 because it's really common and if need be there is lots of factory ammo if I ever needed it. 6mm ARC is so new that as of the writing of this article, published load data did not exist! The base of the neck on the ARC = 1.25 vs the 24 Nosler's 1.3 or .0472 difference to be exact. The 6mm Creedmoor is a short action cartridge. Unlike the NGSW the 6 ARC is a standard cartridge fired from an AR-15. The 6mm ARC will need wide spread use to prove its potential as an effective long range round (500 meters). Unfortunately, 6.5 Creedmoor is too big to fit into America’s rifle, the AR-15. The 109’s are tailored to cartridges such as 6mm Creedmoor, 6mm BR, 6 Dasher, 6XC, 6BRX, and 6×47 among others. ARC listed case capacity is 36 gr H20 vs 34.5 for .224 Valk, or closer to 35.5 for a necked up .244 Valk case. The newest 6mm cartridge is the 6mm ARC, which Hornady just introduced. 6mm Advanced Rifle Cartridge Background. Now, with some motivation and inspiration from the Department of Defense (DoD) they have conjured up the 6mm ARC (Advanced Rifle Cartridge). The 6mm ARC delivers substantially less recoil allowing shooters to spot their own shots. Savage intends to chamber for the cartridge. The 6mm Creedmoor uses a 30 degree shoulder angle, its max case length is 1.92" and the COL is 2.8" The SAAMI MAP is 62,000 psi. While it isn’t standardized by SAAMI as of this writing (January 2017), my understanding is it will be soon. Another vote for the 6mm. The Match 6mm ARC sends a 108-grain ELD Match bullet at 2,750 fps. the arc is only .030 shorter at the shoulder then the lbc/grendel case, it wouldn't surprise me if you cant take arc cases and fireform and blow them forward like a ackley improved or 6mm ar turbo and use them in the Lbc. There are other considerations, like barrel life, ammo cost, and recoil. Compared to all of them, the 6mm option has 3 feet less drop. Finally, hunters get the Precision Hunter 6mm ARC. It pushes 2,750 fps at the muzzle. 6 Creedmoor is rapidly rising in popularity among long range shooters. Its case holds 50 grains of water, compared to 54 grains of water for the .243 Winchester and 47 grains for the 6mm Lapua. The prc is in another class imo. Recently, the 6mm Creedmoor cartridge which propels lighter thinner 6mm/.243 caliber bullets at higher velocities is becoming an attractive alternative. Engineers also shortened the case to make the cartridge friendly to long low-drag bullets that have high ballistic coefficients. The Hornady 6mm ARC is at its best with long for caliber, high BC bullets like this Berger 108-grain Elite Hunter. "At first I thought 6mm ARC just the 6mm AR put into production (Grendel necked down to 6mm), but the cartridge dimensions are all 1% to 2% smaller than the Grendel, with a slight body taper where the Grendel has none." Developed by Hornady in concert with Proof Research and Barret Rifles, the result is a SAAMI spec and full support. The 6 mm Advanced Rifle Cartridge (ARC) (6×38mm) is a 6mm caliber (.243) rifle cartridge introduced by Hornady in 2020 as a low-recoil, high-accuracy long-range cartridge designed around the AR-15 platform.. They have 10 solid options ranging in weight from 90 to 110 grains. Tho just to point out for other folks that are curious, the 6mm Rem is probably better suited in a long action if you want to use the 105s with a magazine. Hornady is an obvious first choice for selecting 6mm projectiles to load the 6mm ARC with. The 6mm Creedmoor has apparently arrived. 6mm ARC. The rim diameter is the usual .473". The 6mm ARC is based on the 6.5 Grendel. So, Hornady has stepped up and has done the same thing in designing the 6mm ARC that they did in designing the 6.5 Creedmoor. Handloaded, that gap would widen further. Hornady started by necking down the cartridge to 6mm and then pulled the shoulder back closer to the case head .030-inch. Hornady Black loads a 105-grain BTHP Black bullet. The shoulder on the 6mm ARC is moved back a bit from the 6mmAR (I'm guessing so 108gr ELDs will fit perfectly at mag length), so the ARC will have a bit less capacity and be a little slower. Over the past decade the 6.5 Creedmoor has become among the most popular long range shooting cartridges available. The 6mm ARC was designed around optimal use with a 108-grain bullet ” very similar to the 6 creedmoor or 6 dasher. The 6.5 Creedmoor has made quite a name for itself in long-range precision shooting, but the newer 6mm Creedmoor is giving it a real run for its money. … Both the 6.5 creed and the 6mm ARC run higher BC bullets at faster speeds than the 6.5 Grendel - so both stand taller as better performers. 223/5.56: The 6mm ARC achieves substantially better ballistics than the 223/5.56. The 6mm ARC comes in three different factory loadings. The round languished until 1963, when along with the rolling out of the buzzard-turned-swan Model 700 rifle, the .244 Rem. Where as the 6mm (mine is a 6.5 Grendel necked down, almost identical to the ARC) does have barely enough to take advantage of the high BC 6mm bullets available. We have the Brass in stock along with Dies. All of these cartridges, along with the .243 Win., share the .308's .473 rim diameter and .470 head diameter. 6mm ARC quick facts: It’s a 6mm cartridge similar to 6.5 Grendel, built for the AR-15 platform; It’s optimized for bullets in the 103 grain – 110 grain range; It’s got more velocity and less recoil compared to 6.5 Grendel; It shares the same parent case with 6.5 Grendel: The 220 Russian However, most of us have experience with the AR-15/M-16/M-4 … If you want to build a long-range rifle on the AR 15 platform, you have plenty of factory options to choose from. Ruger selected a 1:7.7-inch twist rate for the 6mm ARC, the same as used in their barrels chambered for 6mm Creedmoor. While some people are saying that this cartridge is to 6.5 Grendel what .224 Valkyrie is to 6.8 SPC, others are saying this is what 6.5 Grendel should have been in the first place. The 6mm ARC offers a 30 to 35% lighter-weight package (gun and ammo). At 550 feet above sea level during a 72-degree clear day, Oller and I observed slower-than-expected velocities averaging 2,560 fps for 108-grain ELD-M … 6mm ARC vs. the Rest – It’s Just an AR Cartridge. 6mm vs 6.5 Creedmoor - A Ballistic Comparison. Maybe the 6mm Creedmoor has the potential to rival the .243 with a strong marketing push, but realize that the .243 Winchester remains in the top ten in cartridge sales; the popularity is still that strong. The newest 6mm factory round is the recently announced 6mm ARC (Advanced Rifle Cartridge). Lapua has announced they will offer 6mm Creedmoor brass. From what I can see online, with around 100gr pills, looks like a 6mm TCU will do around 2200fps where the 24 Nosler does around 2400fps. It is a nearly dead cartridge though so components are harder to come by. Similar speeds would mean the prc stomps the 6. Re: 6XC vs. 6mm Creedmoor Both Copper Creek and McCort amunition have several loadings for the 6mm Creedmoor on properly headstamped brass. At first I dismissed the 6mm ARC because in theory I have everything covered with other calibers. The 6mm Advanced Rifle Cartridge (6 ARC) by Hornady is a new cartridge that can fire a sleek 6mm (.243) caliber projectile around 2,700 fps with minimal recoil and the 6mm ARC is short enough to fit within the dimensions of a standard AR-15 magazine and it performs very well out of an AR-15 with an 18 inch barrel (what we tested). I have both and I rarely ever grab the Grendel any more. Combining an efficient case design with the wide range of excellent 6mm bullets, the 6 Creedmoor becomes an intriguing choice. The AR-15 platform features a higher magazine capacity. Based on what I'm reading. The results out of an 18” barrel are impressive; 2600+ fps and staying supersonic out beyond 1k yards. But then I realized that I have enough parts floating around to build two more Grendel rifles and I don't really need that. The 6mm ARC should have a trajectory more similar to a 6.5 creed than the 6.5 Grendel, but using ~25% less powder, and about a 30% reduction in recoil. Any of the 3 will be a fine choice. August 20th, 2020 6mm Creedmoor — Barrel Length Velocity Test — 24″ to 16.1″ Our friend Bill Marr of Rifleshooter.com has done it again — conducted a fascinating 6mm Creedmoor barrel cut-down test that reveals how velocity changes with barrel length. 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