I've handled the Mossberg patriot super bantam in the 6.5 Creedmoor and it seems like a very good youth rifle for a reasonable price, I've seen them as low as $280 new online. I plan on getting him one for his birthday this year. My son is 8 60lbs and killed 2 bucks last season drt Hornady American whitetail 129 interlocks with my creed. Another good pick is a 25-06. The rancher we hunt on in Colorado uses 110 accubonds and kills elk and mule deer to 600 yds with low recoil as well. Good luck lots of options!