New Army "Caliber Configuration Study"

[stanc]

Although I may be misreading Joker's post, it seems that our 7.62x51 weapons do not match the 7.62x54's.

Other people have said this, too. I don't know on what this claim is based.

Muzzle velocities of 7.62x51 and 7.62x54R are both ~2800 fps.

147gr M80 Ball has a 0.397-0.418 BC, according to the sources I checked a few years ago when running ballistics tables.

148gr LPS Ball has a 0.377 BC, according to http://7.62x54r.net/MosinID/MosinAmmo025.htm

If that data is correct, our M240 should outrange the enemy's PKM.