Remington make a model 7 for those smaller folks. It comes in a few calibers. I think the .260 is about the best white tail round you can get. shoot it with a 120Gr and the deer will fall and you young hunters won't be recoil shy.

I picked up one for my 7 and 11 year old boys to use and I sometimes take it our over my Rem 700 .270. They each took their first bucks, 8pts each and does last season using it.

Get the trigger done right away, makes a big improvement.