I forget where I read the thread, but a Coroner from Atlanta posted some of his thoughts about handgun performance based on what he saw from the “slab”.
It was an interesting thread, but he quit because the ideologues were biting too hard.
My recollection was that he liked bigger bullets. He had seen multiple gunshot victims where light caliber bullets were deflected by the ribs, or other bones. From what he saw, heavy bullets were much more predictable.
Bullet deflection could be a mixed blessing, if the bullet was aimed at a vital organ, and deflected away, it could take more shots to stop the perpetrator. If however, you were as unfortunate as a friend I knew, he was killed when a .22LR deflected off a back rib or spine, directly in to his heart.
High power rifles were particularly deadly. He made a comment about internal organs pouring out like jelly from body cavities of people shot by a high power rifle.
And he had one softball player on his slab. The poor guy was addled with beer, and someone brought a potato gun to the game. The softball player got into batting practice with the guy with the potato gun. Unfortunately the potato did not go down the center of the plate, and the batter was killed by the impact.
From what I understand, you are better off with big over small, and a long gun over a handgun.
Make my seven foot single shot weapon a 12Ga with buckshot.