Vasiley Zaitsev killed his first German with a PPSh, IIRC. Their unit was shipped across the river to Stalingrad, did not even have rifles, they were pinned down by German fire. Zaitsev picked up a PPSh off a dead soldier,fired one shot of 7.62Tokarev and killed the machine gunner. Officer first chewed him out, then issued him a "more accurate" Mosin rifle.I disagree, there is no such thing as a perfect weapon, Alvin York used his weapon to the Max, so have many other shooters, any weapon is only as good as the man pulling the trigger, You can have the most "accurate" weapon ever made, but the shooter factors in, Range, wind, drift, drop and anticipates the Targets movement, "Paper just stands there" people move. Been there, done that..
At least that's the official version.