.5.56 is generally loaded to higher pressure than .223. Image shows 6.5 Grendel cartridge, parent case of the 6mm ARC. The most critical difference is that in bolt-action rifles (from which the 6 mm PPC is typically fired) according to the "Western Powders Handloading Guide," the 6 mm PPC is loaded to pressures. In a word, yes. This is the loaded equally with most efficient powder. For these reasons, long, heavy for caliber bullets will fit in the magazine and chamber in 6mm and 6.5mm Creedmoor rifles. If you already have an AR chambered in 6.5 Grendel, the ONLY thing you need to change is the barrel. The 6.5 Creedmoor has a slightly larger bullet than the 6mm ARC, and that extra size makes a big difference in terminal performance. I only get 2680fps out of my 22" barrel. rifles come with 1:10 twists, which are not quite quick enough to stabilize today's longest, highest B.C. Update July 2021: Ammo supplies finally look like theyre starting to recover. Offset by a wide selection of available high end 6CM brass. My other favorite load is a Hornady 108gr ELDM at 2970 FPS. Many 6mm-caliber cartridges are used for various shooting purposes because they provide excellent accuracy and light recoil. Before we get started, I have an administrative note: Some of the links below are affiliate links. Hornady introduced 6mm Creedmoor factory ammo loaded with match and hunting bullets in early 2017. 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 . The list is slowly growing, but there are currently only a handful of options for loaded rifle ammunition the 6mm Creedmoor. The first thing to consider when choosing a rifle caliber is what you will be using it for. bullets. It has served me well in both the NRL and PRS league, and I have taken more than 30 different animals with it successfully. The powder, the case, the primer and case wall thickness are some contributing factors for sure. Having a chat with a buddy the other day who insisted that a 16" 6mm ARC would outperform a 16" 6mm Creedmoor using the same bullet (both in bolt guns). Ultimately, it is the shooters that decide which new wildcats or cartridges become popular and are there to stay and which arent. Hornady recommends 1:9 twist or faster for its 105-grain A-Max and BTHP Match. I shot 87 vmax mostly at 2900 fps or so iirc with 8208. TheHornady 10th Edition(p231-237 and p317-322) reloading manual was also used as a reference for the history of the cartridges and provided data to compare their size and recoil. So an 6mm ARC @58k psi might get there. Here's some bolt gun load data. The 6mm Creedmoor can use the same lighter weight bullets as the .243 Winchester and fire them a bit faster (around 200fps with typical factory loads). It also has a very mild recoil thats nearly on par with the exceptionally light shooting .243 Winchester. In a bolt action The 6 Creedmoor rifle is easier to come by in good rifles. I just just spoke to him yesterday and that's what he said he was getting with factory out of his 14.5 suppressed. Both use the same 6mm/.243 diameter bullets, but the 6mm Creedmoor was specifically designed to use longer, heavier, and more aerodynamic projectiles. The only way that works is if his arc barrel is very fast and the creed is super slow and loaded light, similar pressures the creed will outperform the arc every time now the arc will be more efficient. The ARC is also an excellent choice for smaller game animals. The question of whether or not the new ARC will last has been on everyones mind since it was first announced. If you have any doubt how well Hornady does this look no further than the 6.5 Creedmoor. The sixmm ARC has enough stopping power to take down small game, but it is not ideal for self-defense against larger animals or humans. For 75gr and lighter competition and varmint bullets, a 1-10 twist rate would be fine. This article contains the load data for the 6 Dasher based on a survey of over 100 of the top-ranked long range shooters in the country. I waited to long to get the order in, but was trying to do my home work with it before ordering. Velocity At short to medium distances, the 6mm ARC and the 6.5 Grendel are fairly evenly matched, with a slight advantage going to the 6mm ARC. Barrel life, according to most precision shooters is basically the number of rounds expected before the rifle shows inaccuracy of more than one MOA. If youre looking for a round that can do it all, then the ARC is the one you want. This data is for Hornady handloads and HornadyPrecision Hunter factory ammo using a 200 yard zero and a 24 barrel. In a 10-mph crosswind the 6mm ARC 108-grain bullet drifts 10.9 inches at 400 yards. Unfortunately, were not living in normal times as I write this in September 2021. But what does that mean for terminal ballistics? When you use the link above to shop for one of the products, we receive a small commission from the sale, at no extra cost to you. The 6.5 Creedmoor commonly uses 120gr, 140gr, and 143gr bullets. The 7mm obviously stands []. In a bolt action The 6 Creedmoor rifle is easier to come by in good rifles. For a better experience, please enable JavaScript in your browser before proceeding. It is also much harder to control on full-automatic. Been doing a little more experimenting 6mm ARC Complete Upper 20" SS Barrel and 6mm Reloading EVERYTHING! Find the perfect load for your rifle and shoot accurately. The Creedmoor in 6mm Creedmoor is named for the fact that it comes from a 6.5mm Creedmoor which has been necked down to accept a .243 bullet, the Creedmoor in 6.5mm Creedmoor originally comes from Creedmoor Sports, for whom the 6.5mm Creedmoor cartridge was developed by Hornady and Creedmoor Sports jointly. 243 wssm, very accurate, very tough brass, 87 vmax at 3200 from a 22" barrel. Proprietary parts other than the float tube so you'll have to have one built if you go this route. Photo by Michael Anschuetz. While the Precision Hunter ammo uses the same type of bullet for all 3 cartridges, the 243 and 6mm Creedmoor use different weight bullets with that line of ammo. Someone keeps forgetting to tell John Whidden that he cant spank the Creedmore fanboys at the Wimbledon matches with his 20 deg shoulder, low pressureed, overly tapered 243 Win. ELD (l.) makes for an excellent long-range target round, while the 103-gr. Required fields are marked *. Both loads recoil a whole lot less than a 143gr Hornady ELD-X from a 6.5 Creedmoor. Case capacity of the 6mm PPC is about 33 grains of water. All three cartridges have the same rim .473 diameter and they are all close enough in overall size that they are used in short-action rifles. Solutions . The 6mm ARC delivers comparable performance from a wider assortment of bullets, making it a more versatile choice. In general, larger calibers have more recoil than smaller calibers. I used the Hornady Ballistic calculator and Shooters Calculatorto compare wind drift, the range each bullet goes subsonic, and recoil for the cartridges. Lastly, I am . The data used to compare the trajectory of the cartridges was obtained from Hornady (here, here, and here). 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). You must log in or register to reply here. The gunsmith would need a 6mm Creedmoor reamer to create a chamber in the barrel for it. Not only are these LRX BT bullets specifically designed for the best aerodynamic performance possible, but they still offer the devastating terminal performance and high weight retention under a variety of hunting situations that Barnes bullets are known for. For those reasons, flat shooting, medium bore, high velocity (up to a point), and mild recoiling cartridges with a long barrel life have a big advantage in these competitions. This restriction is made under protest, but we have to do this to comply with Californias infringement on the freedoms of speech and association of the NRA and our members, supporters, and the general public. You'll need a new barrel, bolt, and mags. Dont underestimate the impact that recoil has on the ability of a person to shoot accurately either. More so people are about telling others what round is better for whatever reason with no real study conducted. I know there is detachable mags designed for better feeding the short case. Only time will tell for sure, but we think the new ARC has a good chance of becoming a mainstay in the world of competitive gaming. For the sake of discussion, why do you believe that the ARC will overtake the Grendel? All in all building a 6mm ARC would save me around 3 pounds (1 pound being on the very front end). But what does that mean for terminal ballistics? With just a minuscule .8 separating them, the two Creedmoor cartridges have almost an identical amount of wind drift. They decide that with their own hard-earned money. And max velocity can be achieved with stick powders in CM. John Snows article for Outdoor Life was used as a reference for the history of the 6mm Creedmoor. The oldest actual mention of the idea for a 6mm Creedmoor that is laid down in historical record, is this post on Snipershide by user skeetlee, known in real life as Greggory Lee Gardner of Lee Gardner Precision. case, being based on the .257 Roberts hull, has slightly more powder capacity than the .243 Win., and it's therefore capable of imparting a bit more velocity. Felt recoil will vary from shooter to shooter and rifle to rifle, but free recoil energy is still a useful way to compare cartridges. In this article, Im going to discuss the pros and cons of the 6mm Creedmoor cartridge in detail. 25-06 vs 6.5 Creedmoor vs 270 Winchester: The Results Might Surprise You, 6.5 PRC: Ultimate Guide To What You Need To Know. It features reinforced construction and stronger materials throughout, which should help it withstand the rigors of tournament play. I personally would choose a lighter bullets for coyotes. Deviating from Soviet design, the ARC takes on a 30-degree shoulder angle; this is common with . There is also talk on a post over on Accurate Shooter forum by a person calling himself gnoble, that he built this or a very similar cartridge back in 2001 already by shortening a 243 Mashburn (I think he meant a 244 Mashburn). It also has a relatively low muzzle velocity, so it is not as effective at long range as some other calibers. That's why they chose the 6mm bullet. First you will see the video showing a guy that has hunted hundreds of those sized animals with his 6mm Creedmoor at long range and high shoulder shots. PS - If anyone needs a box of 6mm Creedmoor 105 gr BTHP Hornady BLACK, 20 rounds, and lives in Southeast Michigan, send me a PM, I'll give ya a good deal Click to expand. Hey, Peter. Variations on a theme. These shooters we poled shot bench rest, PRS, F-Class and simi auto class. ADDED: 1-2-2021..Thank you, guys, for the comments. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); To re-barrel or chamber a rifle to a difference caliber or cartridge, it is important to know if the bolt face will work with the new case head diameter.