Went to the movies, in an actual theater, last night and saw News of the World. Actually a pretty good old classic Western with a minimum of Hollywood woke nonsense and Tom Hanks is getting very Jimmy Stewart in his later years.
But they had one of those special movie shotguns! In addition to anachronistic guns like the 1875 Remington and an S&W Model 3 ( set in 1869/70) I suppose the latter is chronologically possible, but not in the hands of a dirt poor down and out ex-Confederate soldier. There was an 1866 Winchester for some nod to history.
Anyway, Hanks' character, another dirt poor, down at the heels Reb, has got a double barrel cartridge gun, but only birdshot loads. Until, wait for it, his little accomplice knocks the shot out of the brass cartridge and... fills it with dimes! Sure enough, it then blows a man clear off his feet and backwards a few yards!
Again, considering cartridge shotguns didn't begin appearing until the mid 1860s, the likelihood of Captain Kidd having a double and cartridges is too farfetched, but who cares? He knocked dudes back yards shooting them with coins! Awesome.