Yeah used them years ago with cadets (with not "at")
Works pretty well - a "sparkly" trail and then apop and a bang - plenty of fun for all the family!
Used to use the "Bird Fright" shells, to scare fruit bats.
The rescue boats I used to crew used a similar thing, that had a rimmed shouldered brass case (Looked a bit like a smaller .303 case) and a firing device that looked like a pen, as signal flares.
They were a bit of a failure. The cases weren't waterproof and on the odd one that did work the signal flare was so small it looked like you were a million miles away.
Last edited by Rabbitz on Thu Aug 23, 2018 5:04 pm, edited 1 time in total.