I hope you all understand that I am not trying to **** any of you off. But there are differences between .308 and 7.62 x 51 the NATO cartridge is made a little longer and the brass is a little thicker. That being said, in my own mind I believe that there are really nothing to worry about...
I have a ruger mini 14 and there is always talk about whether it can handle 5.56 x 45 or .223. On the ruger site, it has a box explaining that yes it can use both with the exception of the target rifle which only handles .223. I have looked on the Springfield site for something like this about...