It’s also why we have cartridges like the 22 Nosler, .224 Valkyrie, 6.5 Grendel and now the 6 mm ARC. However, as we’ll see the Valkyrie really is a different horse, and could re-write the landscape of alternative rounds for the AR-15. It delivers less drop, less wind deflection and the ability to shoot accurate groups at much greater distance (1000+ yds). The version with the unshortened 68SPC case in 224, 6mm and 6.5 has been around since long before the Valkyrie anyway, so naturally people will neck the V up. The .224 Valkyrie comes from the 6.8 Remington SPC which in turn came from the .30 Remington. What about compared to the .308 Winchester? which is about 6.5 gr more capacity than a .223 Rem. The .224 Valkyrie offers many bullet options for varmints, but many states require a minimum of 6mm to hunt bigger game such as deer. The US Army developed the 6mm SAW cartridge (center) which showed great potential, it is seen here flanked by a .224 Valkyrie (L) and 5.56x45mm NATO (R). What about the 6.5 Grendel? I have considered an AR15-sized gun that's a bit handier for long range, so of course the question then becomes do I want a gun chambered in .224 Valkyrie, or 6.5 Grendel, or now 6mm ARC? Things I can see it has over the .224: probably better barrel life with the bigger diameter, more useful bullets available in the higher BC range (.224 exist but they're few and new vs. 6mm having done this for decades), probably wider range of powders that will work with it, resize 6.5G or 7.62x39 brass if you want to or need to, and a 6mm bullet is simply better … The 6mm ARC will need wide spread use to prove its potential as an effective long range round (500 meters). Hell I wouldnt be surprised to see a .17 or 20 cal at some point either but have no interest in those. Its dimensions allow it to fit in standard AR-15 magazine wells. But I wanted to get some real-world results with my new CMMG Endeavor 300 6mm ARC AR-15 published as soon as I could, and therefore embarked on an exciting journey. To add, the 6 ARC is easier to see hits and misses at distance than the .22-caliber bullet. In fact, the 6mm ARC is based on a 6.5 Grendel case, but there are differences. • The 6mm ARC achieves substantially better ballistics than the 223/5.56. The cartridge has a water capacity of 36 gr. 224 Valkyrie • The 6mm ARC gives hunters the … Maybe shooters were not asking for the 6 mm ARC … 6mm ARC is so new that as of the writing of this article, published load data did not exist! The .224 AR also has a case length that makes it ideal for shooting the larger .224 bullets (75 - 90 gr) loaded at magazine length. The .224 AR is similar to the 6mm AR, except that it is set up to shoot the widely available .224 diameter bullets. And that’s the subject of this article: chronicling my first loads (I did not have factory ammunition to test) and … I have two QD rifle suppressors that I … https://www.tacticalshit.com/great-another-new-game-changing-caliber-or-is-it Called the “.224 Valkyrie”, it is based on the .30 Remington/6.8 SPC case, necked down to .22 caliber, giving it similar internal and external geometry to the .22 Nosler, released at SHOT Show this year.