I would like to mention that gun "experts" often say that a .22, .25, .32 caliber bullets are not good man-stoppers but I can tell you that .25 caliber round put this 300+ pound guy right down to the ground. Just thought I would mention it as I am a living "guinea pig"
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When reffered to man stoppers, picture someone hiped up on drugs, rushing at you with a knife.
They wont feel the fact that they have been shot, so law enforcement etc. use these type of senario's to judge effectivness of weapons.
They also train for the fact that if they haven't pulled the trigger by the time the offender has reached 10-12 feet away, it is too late for their own safety.

This is brief, and I am sure others will be able to give more details/ corrections, but it is interesting when talking to guards/police/military personel etc about threats they have to deal with. It makes you think of situations with a completely different view.
I am sure after being shot, you would have similar feelings.

I would suggest that you do get some training (if you haven't already done so) because it might end up being used against you one day if you cant control the situation.
I dont mean pull the trigger training, I mean situation training.