While back, going through an antique shop with my folks, looked over an original Sharps, 1874 model. Looked pretty good, but the bore was sewer pipe.
Mentioned this to some people, and was informed that there are a couple of people around who can reline a barrel like that; that way you preserve the original and it's made shootable. I'd known about relining barrels, did not know you could do it on something like a .45-70.
Go back to look again, and it's gone.