If I were to buy a new muzzelloaer, I would get teh T/C black diamond extended range. Cabela's carries them. They come with thre ignition systems so it will comply with WA laws. I am not sure about making 200 yard shots, with iron sights?? But also remember that you have to use a non jacketed bullet. Those harvester bullets are jacketed so won't work in Wa. Just my .02.
Buck