Stick with a good 158g SP loaded to maximum, and you'll have a great 50 yard combination. It'll work farther, but honestly, I'd keep my range with that revolver to the point that I could hit a grapefruit, or canalope(small one
) consistantly instead of a milk jug.
The 357 magnum will definately kill deer cleanly. I've killed 9 with my 357 Blackhawk, and a slew with a 357 rifle. You just have to hunt smart, know your guns limitations, and be willing to pass if everything doesn't feel just right with the shot angle, range, etc.