The one good thing for the pistol calibers is they could be had cheaper because they can use an SB1 frame. That being said, my grandson at age 9 took two deer last season with a 357 mag, both under 100 yards. One was a head shot at about 50 yards, the other a double lung shot at about 80. The head shot was instant, the lung shot was on a big doe, she ran about 20 yards and was facing the other way so I had him to shoot a second time, but there was no need. Upon cleaning the deer both lungs, the heart, and the top front of the liver were just jelly. I had been unsure of the rifle myself, but am not now. The boy can handle light 243 loads but is wary of them and they are unpleasant for him at the bench. He just eats up the 357 though and would shoot a box at a time if I would let him. The gun groups about 1.25 inches at 75 yard,s, and the boy has steady nerves and really good eyesight, thus the confidence for the 50 yard head shot. If the law requires larger than 357 I suggest that you get some 180 gr or 200 gr 44mag midrange loads. If you reload your options are of course expanded, but do not fear the 357, it will do the job. Just let the little guy get in the practice he needs to be relaxed and confident in the stand.