I asked this up in Leverguns but it is probably more appropriate here. I have the remains of a shell in the chamber of my 1873 Uberti Short Rifle, the head came off and the rest of the shell remains. If the chamber were more accessable I'd pour in some cerrosafe and pop it out. I don't think I can do that without getting it everywhere else as well.
Any other ideas, anyone who has dealt with this issue in this gun before? It's a first for me, the first shell I've ever broken like this. Really didn't expect it with cases only loaded with BP, but there it is.