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They were fought with smoothbore Muskets ( the forerunner to rifles , one projectile at a time )
The forerunner to shotguns was the Blunderbuss , which was designed to shoot multiple projectiles at...

I respectfully say "Bollocks"

shotgun: definition of shotgun in Oxford dictionary (British & World English)

Note the word smooth bore .
I can buy rat shot for my .22 but that doesn't make it...

A shotgun has a smooth bore - no rifling ( interesting point raised earlier though about a smooth bore , black powder musket , I wonder where that sits in the legality issues , I would think -...