Quote Originally Posted by lilguy43uk View Post
Looks to be a groove through the breech which could mean that it's a breech loader.
Also, no nipples so it might not be a muzzle loader.

Given that your grandfather gave it to you it's unlikely to be a nitro conversion from a BP M/L.

Have a look for proof marks, that should tell you if it's a replica or not.
Hmmm....it's not likely to be a modern day nitro conversion from a BP muzzleloader: but remember that back in the 1870's, after Colt introduced its cartridge 1873 Peacemaker / Single Action Army, many percussion revolver owners had their pieces converted to fire these newfangled, self-contained cartridges.

How a 130 year old cartridge pistol fits in the UK's gun law scheme, I'm not sure. Is it treated like a modern cartridge pistol, because of its ignition system? Or is it accorded antique status, because of its age?

Anyone know?

Jim