As a father of two sons who have gone on to shoot NCCA competition for The Citadel and as gunsmith who has built them and many others custom youth rifles, I'd suggest a Remington 700 youth stocked model in synthetic. Caliber .243/.257 Roberts. As he grows taller and can appreciate fine wood, a custom stock of quality wood. If $$$ is not an object I'd get a pre-64 Win. Mod. 70 action with a Krieger #4/5 barrel in .257/.280 Ackley with a good 30mm scope and some of Henry Pohl's (Great Am. Gunstocks)fire sale quality wood. That's my $0.02 worth. Best, Dr. Bill