.243 or 7mm-08

My son has used a .243 since he was 9 and it is awesome....I would highly recommend it. That little thing puts em down, and has almost no kick at all. I have a Ruger 77 youth, nice little gun. Also, a 7mm-08 is about as good a round as you can get - for an all around round, so you can't go wrong with either. Good luck!