I am assuming you are in a straight-wall only state.
I have used 44 mag on a 2 yr old whitetail buck at 120 yards. Bullet clipped near shoulder, passed through chest mushrooming to about 3/4 inch or so. Bullet stopped under the skin. Deer went about 10 yards from the time of the shot til the time he went down.
I only know 1 person shooting a 350 legend. He is not very impressed with it on pork. He has made a serious mess of the field with blood all over and not found a few pigs. He has nearly gone back to the 35 rem and 357 mag.
450 BM is the one I want! I know a couple guys who hunt with it and I have seen what it will do on black bear and big whitetail. The damage is impressive