Re: Anyone able to tell me more about this?
Do a Google for "zulu shotgun". Or maybe "tabatier".
French 1853/1857 muskets, converted to breechloading. Belgian barrels
were used in many of the shotgun conversions.
Interesting period in history. The advent of the self contained cartridge,
and everyone stuck with literally PILES of obsolete muzzle loader muskets.
The British came up with the Snider conversion for the Enfield, the US
had the Allin conversion for the Springfield--and the French had the Tabatier.