If you need more than one or two rounds I would say you either live in a place I would NEVER go or your situational awareness sucks and you will probably never feel secure even with a deuce-and-a-half full of spare ammo.
“Plus the idea of using a gun for self defense is not to kill your attacker, but to make them stop attacking.”
Sorry, if attacked I will not shoot to wound. I decided a long time ago that if I wound my attacker and I have one bullet left it will go straight into the attackers skull. My CCW is the Springfield Armory SDS 9mm.