Same here in Virginia. You can use a modern plastic rifle with piezoelectric ignition firing smokeless powder in muzzleloading season if it stuffs from the front, and the General Assembly just approved guns that load propellant sticks from the breech, but Heaven help you if the warden sees you using a cap and ball revolver in muzzleloading season...In Texas, a percussion revolver is not a "muzzleloader" and cannot be used in "Muzzleloader" seasons for hunting. I guess in regular season anything goes.
Jay