There is a TC Hawken Flintlock 50 cal for sale local to me for $375. The pics look good and it comes with 3lb powder, Pan primer tool, Bunch of flints, 2 powder measures, 3 boxes of .490 Hornady balls and some store bought patches. Only bad place he describes are on the barrel around the flash hole and he says it screws out easy. I believe the corrosion spots will clean up at the flash holes. If inside of barrel is ok is there anything else I need to pay attention to because I never owned a flintlock?