Originally posted by Indy
The 7.62 x 51mm is different, not in dimensions, but pressure. The other posts are correct too. The brass is thicker, the military primers harder, and the rifle gas systems are different. A standard commercial 308win should not be fired in a military weapon designed for a 7.62 NATO. In the CETME rifle, pressures around the 30-30 Win range is good. Hornady has a section on the 7.62 x 51mm in their reloading manual. Please take note in order to be safe.
It seems to me , the fluted chamber makes it rougher on the brass , not genrler .Originally posted by Mr (T)
Even with the fluted chamber, you still had a case head separation? Yikes! Did the case stay in the chamber?