Actually, with all lead bullets / no sabots it can be used in weapons-restricted zones. Some of these zones run with the general rifle season and others have their own seasons. You can use a scope as well.
It's the Montana Heritage hunt that restricts hunters to traditional muzzleloaders, either sidelock percussion, flintlock, or more primitive ignition systems.
I'm working from memory, so go get the current licenses and see if there are any restricted zones you'd be interested in hunting. Good luck...