i thought i might add my two cents on this... i am right handed, so when i started shooting i was shooting that way. but i never got very good that way, and then i found out i was left-eye dominant. so now i shoot left handed and about three times as good. as far as shotguns and rifles i shoot lefty, and i shoot pistols righty. i know remington and benelli are the one two companies that currently make left handed auto loaders, i just got an 11-87 lefty yesterday and loved it at the range. rowning makes the PS which ejcts out the ottom so it is lefty friendly. more companies make lefty rifles than shotguns however. remington has a great selection of left handed rifles. anyways, he should deff. shoot with whichever eye is dominant, or he will never reach his maximum potential. good luck!!!