...
We may have wandered off, or perhaps I'm restating the obvious, but....
If it's a clean shoot - if there's no criminal prosecution - then it really doesn't matter what you did, or how you did it, or what sort of weapon, it's condition, ammunition, etc., was used.
However, in many areas, you'll find yourself in Civil Court as the relatives of the BG turn up to tell everybody how good a boy he was, etc.
You then run into the problems of rabidly anti-gun (or just criminally uninformed) media, Judges and Juries who have no idea, and hungry sharks who don't care about the truth as long as they get paid.
The point, then, is to NOT give them any "ammunition" by which to hang you.
The good news is that if nobody can make something out of a half-pound trigger, unless you've got one of those ugly assault pistols, ammunition type and caliber may be the only real issues. I think we've covered that well elsewhere in this thread.
The bad news is that Juries tend to be made up of people who didn't have the "pull" to get out of Jury Duty....
(Some years back some gang-bangers shot up a house hereabouts, killing a little boy. The local rag screamed "high powered assault rifle". It was a .22.... Semi-auto.... .22LR.... Wrong house, too.... Trying to prevent that is like trying to stop hijackings by banning travel agents.... It's the criminals, stupid.)
(Tallpine: The idea is to then be able to put Officer so-and-so on the stand and let him tell the Jury that he's carrying stuff that's a lot worse. That's why you try to stay "reasonable" on your ammunition choice. If the local PD likes .32ACP, we're screwed, of course, but some kind of 9mm HP seems to be the minimum these days. All we have to do is appear "reasonable", but sometimes it's good to be able to slap the shark upside the head.)