I know alot of people say that the steel cased ammo is no good out of their AR's,and when I had my AR I didn't like to shoot it.But Im wanting to add to my collection of SHTF ammo for my M1A,and was wondering about the 308 steel cased russian ammo..The M1A is pretty hard on the brass anyway,do you think it would hurt to run steel cased ammo through an M1A? I've never heard anyone talk about it.