Not that it's worth anything, but my cursory observations in criminal tactics seems to indicate that very few are:
(1) fully competent in the operation of firearms
(2) versed in tactical reloading
(3) any good at aiming for stationary OR moving targets.

"Spray and pray" seems to be the mentality. To that I thank the heavens and movies, as it increases the odds of survival if you're ever confronted with such a disaster.

I would suggest that your odds of surviving a criminal attack with a firearm increase logarithmically (or at least geometrically) with the distance between you and the bad guy.

I would also suggest that if you are able to survive the first volley, you'd probably have upwards of 15 seconds to evacuate while the dork tries to reload.

I agree with Rolf - if you have no other choice but to discharge your weapon, the dozier pattern is most effective at incapacitation (Two to the center of mass and one to the head). This should preferably be accomplished while moving to a cover position.

I have no idea why I am even discussing this... I am not an expert, nor am I one who feels an overwhelming probability that I will be attacked (despite my earlier comment regarding my neighbor's armed robbery experience)...