I think that any of the cartridges you mentioned would be good for him, especially since he is already learned proper technique since he is already shooting the .243. I started out with a 30/30 at age 12 and when I turned 14 my dad got me a 7mm Rem Mag. At the same time he introduced me to reloading so I started out on the lighter side of the 7mm Mag and worked up. It was quite an easy adjustment. The .270 or 30-06 may just be the ticket since there are so many bullets available and light loads are a cinch to start with until he can handle full loads, it may be more cost efficient as well allowing him to shoot more thus gaining confidence along the way. You certainly are thinking in the right direction!
Last edited by Carwi; 02/14/04.
