Try StaffordSHIRE.
Very nice India Pattern gun, aka "Third Model Brown Bess".
You're all set if Napoleon tries for another comeback!
The original Long Land Musket was history by the time of the Napoleonic Wars. It had a 46-inch barrel and 4 ramrod pipes. Standard at the time was the Short Land Musket, a mere 42 inches but still with 4 pipes.
The Trade was also making guns for the Honourable East India Company, these with 3 ramrod pipes and a 39-inch barrel. Because of scarcity of things to go BANG, the Gummint started buying India Pattern guns from the Trade and by the time of Waterloo they were the most common type. They all were 12-bore guns (.72" - .73") but the ammo issued was 14-bore balls (roughly .690"). They could use French ammo if they had to, but Everybody Knows That British Gunpowder Is Better. After Nappy was safely put away, quite a few were converted to percussion fowlers. Fortunately for you, yours was missed.
Beautiful piece.
Have you tried it with cartridges yet? Fifteen rounds in 3 minutes and three-quarters: 4 rounds a minute was the standard. For a real fun watch on the Tube, see "Sharpe's Eagle". Bess is the REAL star.
Lovely old toy.