Just a wild thought...
Restock the 7mm-08, as suggested. Then use the money allocated to the new rifle to buy.... a new rifle. But choose a chambering that is different enough to expand the opportunities. Get a 243 for light game, or a Creedmoor or a 357 lever action just because they are a lot of fun.
I'd run with this plan, but think really hard about adding a .223, perhaps with a matching action, or a fast twist to shoot heavies. He would get a lot more shooting practice that way.
