Categories Geeky Videos Black Powder Cannon & a Refrigerator Post author By PeanutChuck Post date 1.75″ Black Powder Cannon 1 My 1.75″ cannon with 1 cup of black powder shooting at refrigerator with 3″ thick concrete slab inside. Tags Black Powder, Cannon, Refrigerator ← 28 Pictures of American Actress & Model Emeraude Toubia → 8 Awesome Animated Pictures – May 5, 2016