It's amazing to me how much the attitudes and abilities of hunters have changed over the years. Yes, you can't kill something too dead and I believe that there is no such thing as too much gun. BUT, is a .460, .480, .454, .4whatever, necessary for deer? HELL no! Too many people try to make up for poor marksmanship with massive calibers. .357 marginal for deer, especially whitetail?
Come on guys. A well placed .357 with a decent bullet is plenty for deer within it's range limitations. For crying out loud, Dan Wesson's son killed a moose with one when they first came out. No, I don't recommend a .357 for moose but to say that it's "marginal" for a piddly little whitetail? I don't think so. If someone has seen a deer, especially a whitetail, walk away with multiple "good hits" from a .357, they were NOT good hits or they were simply too far away. Hell, I've seen guys put 4-5 rounds in a mulie or an elk with BIG rifles and have them walk away. I've also seen a .243 drop them in their tracks.
I have 2 words for you...SHOT PLACEMENT!!
I've killed my last 2 deer with G20 and this year I killed one at 112 yards with it. I've killed antelope at 186 yards with a Contender in 7mmTCU. I killed a whitetail at 143 yards with a Contender in .45-70. I've killed numerous deer. 2 elk and a couple of antelope with open-sighted revolvers in .357 and .44 mag at everywhere between 25 and 140 yards. What I have done is not unique and I am not special. It just takes practice and a intimate working knowledge of your gun and load along with a respect for the animal that demands good, clean humane kills.