my son will be 7 in october. he's kind of on the small side at a little over 40lbs. however, from a bench position he shoot my nef. 223 with a youth stock installed pretty well, definitely good enough to double lung a deer at 50 yrds. i'm considering getting a .243 barrel and loading it with some 80-85gr. bullets for him to hunt with. he will be hunting from a blind with a bench setup. do you think the .243 with 80-85 grainers is too much recoil for him? i know its about twice as much as a 55gr. .223. i was thinking about letting him practice with the .223 and then installing the .243 barrel and sighting it in before his hunt.