Claven2, thank you for your support!
DaveN please note:
A barrel that only shoots lead balls cannot be shot out in a normal lifetime. It can, of course, be ruined by poor maintenance (rust, bell-mouthing from incoorect cleaning) and patches themselves can be abrasive. But if you can see rifling from one end to the other, then it is a potential shooter from the point of view of internal ballistics. Provided, of course, it is not suffering from some fault (deep pitting, delamination of a damascus barrel...) which could make it hazardous. That is something that neither Claven2 nor I can judge from a distance. But you say you can see rifling, and the outside was not covered in rust. That is one compensation with "treacle" rifles - plastering varnish over everything does at least help to save the thing from rusting. Since Bubba will not have varnished inside the barrel ("out of sight - out of mind") then that is the weakest point. See if you can get a light inside that barrel! (A white-light LED on a thing twin cable will do)
But back to the woodwork!
I hope to hear from you soon, with some photos of wood looking a lot better than before!
Patrick