i have a 222 mag AI. i love it! it,s a savage, shillen barrel, chaote stock, unyrtl 20 power scope, sharp shooter trigger, and shoots .250 groups with 40 gr balistic tips, at 3800 fps. talk about efficient! it takes 28 grains of powder! compaired to 40 grains in my 22-250 AI, at 4000 fps! the 12 grain diffrence gives only two hundred fps increase. one thing about the ai cases is that they dont grow nearly as much as regular cases. i hardly have to trim ai cases at all! i never shot the parent case, but i,m sure that 3800 is a max load. i dont know how much cap. you can get with the .223ai but i like the non growing brass!