jhgreasemonkey
New member
If one were to make a black powder cannon for 4th of july type purposes. Not to actualy shoot anything out of but just for the Boom. Would there be danger using a steel pipe that is roughly 1/3" thick steel. It is from a construction heavy load bearing rack. There is an even thicker steel cap welded on one end. The pipe has an opening of about 1 1/2" to 2". Can cut to any length probably about 3 feet. The pipe will have a bore drilled for cannon fuse and be attached to a weighted hand truck layed down. How much powder is safe? Also I dont think there is but is there any legal issues to be aware of? Thanks.