I'd like to thank everybody for their advice, research, and offers on this old gun! After taking it to a professional, it is confirmed not safe to shoot. It is now serving as an excellent wall piece and will be well cared for. I managed to pick up a perfectly good reproduction Hawken rifle in .54 cal. I'm taking it shooting this weekend; any idea what to use for powder measures? I already have a powder dispensing flask, but I need something to measure the grains per shot.
Thanks a bunch guys, looking forward to more great interactions with the Muzzleloading community!