|You know you want this fine weapon in your bum.|
This musketoon was basically a shotgun, so what's stopped you from loading it with a dildo or seven and firing it while it's in your ass? ABSOLUTELY NOTHING. First, you get the pleasure of a musketoon being in your butt, and then you get the maximum pleasure of a dildo being fired into your body. Win-win.
For added historical feel, wear a red coat and cool hat.