I think you mean perceived, over penetration. It's dependant on the type of bullet and load being used. While the surplus ammo will over-penetrate, after-market ammo like PPU Defensive Line Jacketed Hollow Point you would not have that issue. Even Fábrica Nacional de Munições de Armas Ligeiras 7.62 X 25 does not over-penetrate as it has no steel core and is lower velocity.