It looks like a lot of T/C fallowers, but there are no new T/C's that fit your specs. Take a good look at the Lyman Deerstalker, they still make them. They are a good rifle and fit right in under $500 new. Be ware of used muzzleloaders, especially if you can't see it first hand. There are a pile of used muzzle stuffers out there that have pitted and rusted bores.