Black Powder Shotgun Shells
 

The conventional shotgun cartridge is designed for black powder. It was invented around 1870 when black powder was the only kind of gunpowder that anyone had ever heard of. They didn't even call it "black" powder. It works just fine with black powder, and can still be loaded with black powder today. Here is how.

http://www.tbullock.com/bpsg.html

Re: Black Powder Shotgun Shells
 

good to know.
i have some for a twist steel barrel l. c. smith.
i wondered if those shells were ok in regular barrels- thanks.