These numbers are bogus. With exploding rounds from a gun that feels like a bazooka and sounds like a cannon, the lethality has to be near 100%. /s
Kuntzman never shot a Mosin-Nagant M-38 at dusk. It is a cannon.
And that was just a .223 round. Imagine shooting a .50 BMG. You could put the sun out with a single shot.