9mm Rounds are far too ineffective, even at close quarters. Enemy AI seem to be able to take more than one shot to the head.
- Legacy ID
9mm rounds seem to be fine for me. In arma, as in real life, armor, backpacks, RPGs, rifles, and anything you can stick between you and a bullet will slow down the rounds. Try shooting them where they aren't wearing body armor (Face, arms, legs. unless they are civilians they're going to wear as much armor as try can carry). The current round penetration system seems good to me :D
I'm playing on the highest difficulty. And I feel that if you fired three or four pistol rounds into somebody, wearing combat fatigues and a vest, they'd do more than just... well... flinch.