Based on the location of the wounds it can be argued that the officer was attempting to wound and stop the assault rather than kill.
Indeed. It would seem that he was not aiming at the center mass. If that were a target instead of an autopsy form, it would indicate exactly that.
NONE of my targets look like that. I get them all right in the middle, and I’m a N00bie when it comes to shooting. A REAL N00bie!
I doubt it. Assuming police are trained to aim for center mass, he was pulling the trigger (rather than squeezing it) and his breathing was way off. He was obviously in the middle of a stressful shooting situation. Again, it depends on training, but in the Army we're trained to shoot until the target goes down, so it's likely that it took that many hits before Brown was down and no longer a threat.