That was my guess too. If you are going to put a round into somebody, it needs to be a larger caliber to fubar their insides - 9mm is just too small a round for true stopping power. I'm sure it is challenging aiming for a headshot with a finger missing. Pin one of your fingers back that you usually write with and try to sign your name, I'm sure that would show how different something can become when you have a body part dismembered.