I'm a sucker for shney things and you can't get a 45-70 in nickle or SS so here is my idea.
Buy a new 45-70, have the barrel shortened to 16 or 18" and send it in to have a 20 gauge barrel fitted to it, have it shortened to 18 or 19", fit screw in chokes,.... then send it all to have it electroless nickel coated.
I think it would be sexy//////
Anybody got anything like that made up?