The Mosin has been doing really low damage recently. It never kills in 1 or 2 shots in my experience or other's experience most of the time.
It takes usually 3 shots to kill someone with Mosin now, sometimes 2. That's outrageous. It should at least knock people out unconscious in one shot, and kill in 2 shots, (with torso shots)
Shots to Limbs should be 2 shots to unconscious, and 3 shots to kill.
Could be hit registration too, but I highly advise you to tweak the damage zones for the Mosin, as it's way too weak right now
Even the IZH which is 7.62x39 kills faster than Mosin which is 7.62x54 (higher caliber?!)