I bought a new project this week, a model 6 with a pristine receiver and a messed up barrel. The mounting screw boss is damaged, been repaired, and needs more fixing. At present, the bore is not great, but shootable, and finding another barrel would be the easiest solution. I’ve also thought about getting a second Breech block and setting it up for shotgun primer propelled pellets, making a dedicated barrel from scratch on that one.