[cynwoody]

George Zimmerman's instructor didn't tell him that.

I'll bet GZ's instructor also didn't tell him to get in a wrestling match before opening up.

And the law says force necessary to neutralize the threat -- not to "ensure that the target is down".

In the heat of the moment, there is no difference. If a single tap was justified, then a double tap was also.

[Uncle Chip]

The authorities always count bullets to determine intent. The first bullet may be self-defense and all that is needed for that purpose.

But if you have called 911, and are in a locked car, and in a Shell station, and the person that you just put a bullet into is the same one that was just involved with you in a car accident, and you agreed to pull over and to talk about it, then the second bullet would not have been self defense, but evidence of intent to finish things off.