Oh....okay....COM is center-of-mass or center-mass..... I get it....still a taser or leg shots would have dropped him...no need for COM mag dump
If you are in fear for your life, you shoot to neutralize the threat. If you don't feel it's necessary or can't justify taking your attacker's life, you have no justification to draw your weapon in the first place.
Shooting to wound is likely to put you on the wrong side of a civil suit, and the last thing you want to deal with after a situation like this is an injured/disabled "victim" testifying against you. You may win the case, but the suit will most likely bankrupt you in the process.