Originally posted by turbonatr
I really understand that everyone out there wants to make the best possible choice they can about their carry choices, etc., but what it really boils down to is training. Worry more about putting those bullets where they need to be as accurately and as quickly as possible. 9mm, .357, .40, 10mm, .45acp...it's all the same. Pick a premium JHP of sufficient weight, functions 100% in your particular gun and get to the range!!
Shoot, and shoot often. Secret Service agents qualify everyday when they go into work. Being proficient with your weapon is what will make the difference. Aiming at the COM, not just the whole body as a target.