I'd really love to own that piece. Re-finish doesn't bother me - I'm a shooter and that gun would kill my deer, elk and moose this fall. Maybe even a bear if I found a nice 7' or better blackie.
What the bore dimensions are is immaterial for me - buy or cut a mould to fit - as long as the barrel wall thickness is OK. Since the rifling still exists, it's probably just fine. Yeah- I'd like to won that one - alas, name's Sapergia, not Rockerfeller.