A caller on a local radio show mentioned those "M-80s, round red things with the gree fuse.."
Here is my experience from "back in the day:"
Cherry Bombs: Round, red shell, the outside sort of gritty. Stiff green fuse. (Gave it kits name)
M-80: Also know as a "Silver Salute" and "Ash Can." Silver cardboard shell, tubular in shape, stiff green fuse.
The green fuses were waterproff and could be used for underwater explosions.
2" Salute: Typical firecracker shape, red paper shell, twisted nitrated paper fuse, not waterproof. Very loud blast ad flash.
There was one that was red carboard about the size of a toilet paper core that was called an aerial salute. It was mounted on a square wooden base.
Aerial salutes were meant to be fired upward, but a carefull dug hole would allow it to shoot the charge to the bottom of the hole. This in soft sand. The blast woould mae a sizeable crater in the sand, and shower you with sand, too.
Those carbide cannons worked well with conventional firecrackers used to propel corkballs or whatever projectile we chose. The barrels were thn steel, but the breech was heavy cast iron so would take some pressure. We never blew one up, as I recall.
And coppr plumbing tubing makes poor pistol barrels, while the actions of cap pistols and paper caps worked well for ignition.
And you know what? Each of us grew up with all of our fingers, eyebrows and other issued parts.
Bob Wright