i believe that the original question was what is the best .45 ammo to use.
he didn't ask about training. you can have the best training that money can buy but if you have ammo that won't perform, you could be screwed.
and it is true matt that if you had the best ammo and no training you could be screwed just as bad.
"Tolerance is the Virtue of a man without Convictions" G. K. Chesterton
Considering the fact that the victim is the first one at the scene of a violent crime, I believe all law abiding citizens should be armed.
"Fast is fine, Accurate is final." - Wyatt Earp