3. The ammunition loaded for the M60 machine gun was a larger diameter, .3086, to give good accuracy as the barrel heated and the bore diameter increased during sustained firing. It operates at 65,000 PSI, and was found to give excellent long range accuracy in the match bolt rifles of the 1960s, so it was issued to snipers for their bolt actions.
This is essentially the same 9-degree boattail FMJ bullet developed for the 1919 Browning machine gun in 1926, and used in the 1903A3 and 1903A4 sniper rifles of World War II....
Standard ammunition is a lot less powerful than the 172-gr M60 ammunition at 65,000 CUP.
Now I'm curious...what is the nomenclature of this round? ie. what does the DoD call it?
