I live in PA we don't have muledeer just medium sized whitetails, 150lbs is a BIG deer here. longest shot i have ever taken at a deer was maybe 75yds so why would i allow a kid to take a shot i wasn't sure they could make? I'd never take a new hunter out and let them wander around alone i keep them at arms lenght if i can't reach they are too far away!!! But this is off the topic it doesn't matter if target is 10ft or ten miles it has nothing to do with felt recoil. and as many will atest a 357mag is plenty for whitetails at reasonable ranges! the question was not is a 357mag the best choice of course it isn't but is it a better option than a gun that scares the crap of kid. I've seen alot of irresponsible hunting behavior in my day but i feel the need to teach ethical behavior rather than just allow them to do something, it doesn't matter if its hunting ,fishing,paintball,or checkers the point is;if you take the responibility of teaching something to someone else do everything in your power to taech them right!
I apologize for being a bit long-winded but this is a subject i'm very passionate about.
Quick i checked out the link you posted thanks for the info it will be what i show my friend before he decides on what to get for his son.