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Hi Thomas and welcome. No Sir. This is a Black Powder pistol (Not Centerfire) : https://www.youtube.com/watch?v=mdr6zi4X1b8

The 1860 army is generally a cap and ball black powder pistol that doesn't use cartridges at all. If it has a cartridge conversion to .44 Magnum then .44 Special would work, but that seems unlikely.