Teach the youngen' s how to shoot with the .222, .223, .22-250, etc, then move them up to the .243 win, .250 savage, 6mm rem, .257 roberts.

I don' t know what the recoils #' s are on these rounds but there is not that much differance between the .243 and the .22-250, .220 swift. and you gain a MUCH better round for the job. Better yet a nice short carbine in 7.62x39 or the .44 mag would be also ideal for kids. When you are starting them out they should not be taking shots much past 100 yds. These rounds will work for that distance and a little beyond, plus the margin for error is greater because of the bigger bullet.