Lone Gunman - I am assuming from your post you are/were a surgeon. Without trying to dig too deep into the macabre, can you make any informed comments re the FMJ wound channel, damage etc.
I do general and vascular surgery, and this means I am also on call for trauma.
My observations as a surgeon need to be taken in context. Remember, that if someone is killed at the scene, I never see them. Thus, I get a skewed population of GSW victims: those that live long enough to make it to the ER. Thus, I presume I see less extensive injuries than occur overall.
I have seen only a handful of people shot in the torso with 45's and 357's. I presume this is either because criminals don't use these calibers, or if they do, the victim dies at the scene before I see them. Of the ones I have seen, I would guesstimate that about half these people lived to make it out of the hospital. These calibers make impressive wounds, penetrate deep, and usually exit.
I cannot tell much (if any?) difference between a FMJ and JHP wound channel.
I have seen many 9mm, 380, 38 spec, 32, 25, and 22 wounds. The majority of these were FMJ's. Of the JHP's, I would guess that less than half expanded. Most were just deformed a little bit. 9mm usually penetrates deep and exits. 380's are more likely to not penetrate deeply enough to exit, even FMJ's.
I don't see any difference in wound channels or tissue destruction between 9mm, 380, and 38 special. 25 and 22 caliber wounds are noticably smaller, but I am not sure this would correlate with an improved rate of survival when compared to the larger rounds. For example someone gut shot with a 38 will have a bigger hole than a 22, but both can easily be fixed, and the chances of dying of infection post op are the same.
The vast majority of people shot with 9mm, 380, 38 special, 32, 25, and 22 will make it out of the hospital alive.
The bottom line impression I have is that big, deep holes are more effective at causing death than small, shallow holes, but I bet you probably already had that one figured out!