They were meant for making short work of highwaymen when shooting from a stagecoach or on mutineers when shooting from the Quarter Deck, But the latter was more often dealt with using a swivel gun.A blunderbuss is pretty much useless. Sure, it might be fun to see the effective range of shot on tin cans. But then what are you going to do with it? Shoot more cans at close range?
The Muzzle is for quick reloads, not for shot spread.
LD