Free: Contests & Raffles.
Have you shot the 300 ultra mag? or much of the magnums? I would hate to see a young hunter ,pick up bad habits from a big magnum. I would really say the 30-06 would be a better choice for you them. The 30-06 will kill any animal you want to hunt. Within a reasonable range.
I started my son out with a 270 and hand loaded light loads then moved him up as he could handle the shooting. Then he wanted a large weapon. His high school graduation gift he wanted a 338 RUM. He is 230 very, very strong played football. He said it kicks so we purchased a different stock. He makes tells me I can not shoot it because the kick my stop my heart. He can only shoot it roughly 10 times then he is done. Mostly because he will start flinching which is a really bad habbit.