Have y'all seen Hornady's new cartridge? I have to admit I'm interested in this one. I am going to build another AR soon. I don't reload so ammo availability has me pretty torn right now on what to build. 350 legend seems to be available quite often at midway, but 6.5 Grendel is hardly ever which is the other caliber I was considering. But now, I'm thinking I should wait and see what becomes of the 6mm ARC.