RE: muzzlebrake?
That is a tough spot then, most states .243 is the min. caliber I believe for deer, someone tell me if I am wrong please. I guess you wouldn't have much of a choice other than the break. The recoil pad will most likely make the pull too long for the youngster. There are several companies that incorperate a recoil reduction system, basically a break and a dead blow type device incorperated into the stock, they claim a major reduction but cost $$. I will find a few and post the links for you. Possibly a semi auto would help but they may be impossible to find in a youth size and still may require the break system if he is so recoil sensative. Best of luck.