Here in WI, where it is legal to use 9mm (as long as the bbl. is over 5"), and I am capable of hitting a deer's heart/lung area at 100 yds. with my Kel-Tec SUB2000, even with the added velocity the 16" barrel gives, I would still not even think of hunting with it. Maybe I'd use a 9 for a
coup de gras shot, but that's it.
My Dad shot at a buck at 75 yds. with his .357 Trooper MKIII, and hit the doe standing next to him. (It was a quick shot, and his rifle was leaning against the camper, as he'd just got back to camp for lunch.) I tracked them into the woods about 100 yds. where the doe got up about 10 ft. in front of me. I emptied my 742 .30-06 at her, hitting with the last shot, the only one I actually aimed. (The rifle was not up to my shoulder for the first 4 shots.
[Hey, I was 15 at the time, first year hunting deer. Doe fever?
]) My Dad's friend went after her and finished her off, and was pissed at both of us for using up
his doe tag. The .357 hit the liver, went in about halfway. My 165 Nosler Partition plowed it's way from her tail to her shoulder, and looked like the ads.
His .270 Rem. Cor-Lokt went right through her skull from 10 yds.
My Dad and I spent a lot of time at the range before the next season.