Ok i think i know the answer to this but just wanted to be sure. I know that if you have a ridfle chambered in 5.56 you can use a .223 rd, as the dimemsions of the brass being slightly different. But niot the other way around. And i am pretty sure that idea applies for a rifle chambered in .308, you can shoot a 7.62x51 cartridge in out of it. That correct??? Also what about 7.62x54, and whats the difference between 7.62x51 and 7.62x54?? Can someone please just clarify so i dont screw something(myself) up. Thanks.
Last edited: