I have only one Savage .. a 10ML. It has the accutrigger. Nice. And this muzzle loader is amazingly accurate.
There are tons of choices out there for your son. I hunt with about 20 different guys and a couple of gals on a regular basis. The rifles "we" use include Savage, Browning, Remington, Winchester, Ruger, Styer, Marlin, NEF, TC COntender (pistol) and an old sported Mauser. Among these are auto loaders, lever action, bolt action, and single. shot. So the way I see it, it is more a matter of budget than anyting else. Nothing wrong at all with a Savage.
You did not mention ... but if you are going to mount a scope, buy the best glass that you can afford. About any modern rifle being sold today will shoot just fine. But if you can't see 'em, you can't kill 'em.