not to get into a peeing match between you 2 but i think below are all the US militay bullets ever used for rifles and machine guns. they havent changed the bullet types much over histoy

U.S. Military Small Arms Ammunition Types
Rifle and Machine Gun Ammunition
.30-06 (Springfield, Garand, light machine guns)
.30 Carbine (M1 Carbine only)
.50 cal (heavy machine guns, tactical rifles)
7.62 mm NATO (M-14 rifle, M-60/M-240 machine guns)
5.56 mm (M-16 rifle, M-249 SAW)