Free: Contests & Raffles.
I have to agree with Bob33, the .308 should be fine for him. My second deer was with a .308 at age 13, and I was on the smaller side, though it was a semi-auto. But as mentioned, reduce recoil loads are common and would be a good starting point for him.Other than maybe being on the heavy side, I also think that the big game legal ARs would be an acceptable alternative.