according to BSA, boy scouts can't shoot anything but a single-shot .22.
http://www.scouting.org/pubs/gss/gss08.html
That's bullcrap. So I guess we will be transitioning to youth activity when we shoot.
I think the .22 is best for the young guys.
I have a rule. If you aren't strong enough to hold the gun steady, you aren't allowed to shoot it.
We had a deacon that shot Farah's Kahr 9mm. The slide wouldn't return because he kept limp wristing it. He was going to shoot a 12ga but I took it away when he couldn't point it without waving up and down.
They sure make weak kids these days.
Probably a good idea to stick to rifles. Harder to accidentally point a rifle in the wrong direction.