Sorry, but 7.62x54 is NOT a NATO round. You are confusing it with 7.62x51. 7.62x51 is what made the M-14 uncontrollable. It was also used in the FN FAL and the M-60.
This is fun.
51, 54, I was confused, too many numbers in my head.
infowarrior: I meant 7.62x51 = 308. Sorry!