As a small side-comment to yours, the 9MM handguns actually have greater range and accuracy over the .45s because they have a higher velocity and a lighter slug. Often times they do not have the "stopping power" to put a person down (i.e. kill them, incapacitate them) with a single hit because it is so powerful it's going all the way through them and then through whatever else they hit after that. The thing about the .45 is that it "stops" people because it transfers what energy it has upon impact, and has little or none left after (if) it penetrates all the way through. The 9mms retain their E, to put it in AH terms, far better.