As wired said, a shotgun would be preferred, followed by any of my carbines; Marlin 9mm Camp Rifle, M1 carbine, or AR-15/M-4 variant. If forced to use a handgun, any of the calibers would suffice. My preference is the 45 ACP because I shoot mine very well but I have used all the mentioned calibers at one time or another and still have guns in those chamberings. My only reservation to the 357 is the muzzle flash I've experienced in my 4" barreled M-66. If one were to use it in low light conditions, it would not be unusual to be blinded for a bit and still have spots to contend with. This makes for poor follow up shots if needed. Modern powders may have alleviated this somewhat as my last experiences with the 357 at night are nearly a decade old. Use a good bullet like the XTP, Golden Saber, Hydra-Shock, etc., and your gun will be better prepared than you.