ORIGINAL: bob roberts
The VAST majority of military sniper rifles are .308, and have been for well over 20 years. The majority of sniper rifles currently being built by the MTUs are also .308. There are some applications for the 50 cal, and they are currently being used in Iraq, as they were when we were inSomalia. Some civilian police tactical units use 300 mags, .223, and a few other calibers, but they are in the minority.Most still use the .308.
I know that the Armyrifle team uses a modified Rem. 700 action chambered in 300 win mag. Many of the "field rifles" are the same. Many are chambered in 7.62 NATO aka 308. The point wasn't what the army used, more that 500 yards is too farfor the average joe to be attempting.