Looks like a Hi-Wall to me ? ? Cartridge gun ah'm thinkin', maybe a .45-XX X?. Sure would like it if someone produced an inline using that action.
Oh looky!
Ah got into his stash of pics
That's a nice looking rifle!
Could be an Uberti but most of those I've seen have case hardened receivers. Might also be by Winchester or Browning - either way I don't think I'll find one in my local gunshop.
I keep voting forWinchester to produce one asa muzzleloader.
http://www.winchesterguns.com/