I got a box of 500 rounds for my ar 10...nothing but problem with the ammo i shot 60 rounds of wich 6 jammed and 3 exploded the bullet broke apart in gun...the part that holds the primer came off leaving half a shell in chamber took hours trying to get it out happened 3 times...to be sure it wasn't my gun i bought 100 rounds of brass and not a single problem....i bought steel for ar15 snd ak and works great i think the 308 is to big else i just got a bad box either way ill never get steal for ar10 again just isn't worth it scared the hell out of me broke 2 clips now i got 440 rounds i cant do nothing with isn't worth the risk