Thanks for all the replies and input.
The Savage seems attractive bc it is inexpensive, comes with a scope, and while I have never owned one I understand they are plenty accurate. This will be 200 max, and likely 150 and in. I would prefer to use factory ammo for simplicity but not against loading myself. MOA would be plenty accurate...need to get their shooting to the point that accuracy of the gun is the limiting factor.
7-08 seems to be offered widely in youth rifles...selfishly i would like to get a 6.5mm of some sort bc I own a custom '06 and have a custom 28 Nos on the way and have always had a list for a 6.5, but I am smart enough to know this isn't about me in the least. But all else equal I'd get a 260 or 6.5cr.
When he is ready for a full size i could go with a different rifle altogether, which would not push me to a R700 for the upgrades down the line.
Any reason not to go with a Savage in 7-08?