While I would not feel un gunned with a .357 it would never be my first choice for any big game animal. My straight wall cases for hunting start at .41mag .44 special and mag , .45 Colt and .480, Just choose a cartridge that you can shoot well, and shoot it often . The recoil from the 480 gets nasty above 355 gr bullets and the 454 is down right nasty for my old hands when ran hard with about any bullet. I have much respect for the people that shoot them well, but they are not for everyone ,and not for me. Good luck with what ever you choose just don't over gun yourself, but work up to it. Ego has no place in the hunting fields, confidence ability and skill does.