Paul. Where are you from in Manchester? I grew up in Reddish, Dumbarton road, near Reddish Vale Country Park shooting everything from air-rifles to a home made cannon that we made from a scaffolding pipe. The "propellent" was a sodium chlorate weed killer and sugar mix, the "charge" was bits of lead pipe that we chopped up with my dads axe. We used it to ambush ducks on the Jacksons Brickworks "brickie" pond. I got caught at 12 years old poaching pheasants on Tatton Hall Estate in Knutsford. Happy days!!!