Man I should read on this forum more often. I definitely would have liked to talk on this subject. As to the cost...I'd say $300 tops. It is amazing that a black-powder from the 80's is in as good of shape as you describe. I have a couple that are but most folks don't know how to or don't take the time to properly care for their black powder guns. As to caliber, the least caliber that one is allowed to hunt with legally here in OK is .45. I have often wanted to get a .32 for squirrel hunting but never took the plunge. I love to shoot authentic black powders. Hope you got your gun ok.