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Shotgun barrel

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zofoman:

--- Quote from: shooter on January 16, 2016, 10:36:24 PM ---  NEVER weld up a pipe for a black powder cannon, I have seen many that had the back end blown of, Im a certified welder , and would never attempt to do that
--- End quote ---
Thunder mugs such as this with a thick base using schedule 80 pipe are pretty safe, assuming an experienced welder does the welding...sorta like this:  http://www.cannonfuse.com/store/pc/-NEW-5-Tall-Signal-Cannon-p11944.htm   I was certified welder years back (not sure of expiration dates?) and I'd be very leary of welding a plug on a shotgun barrel...I'd go for the wind chime option myself.  Shaft/hardened steel that is turned & bore-drilled leaving a thick sidewall is what you really want for a small caliber signal cannon.

Having said that....do check your local/state laws regarding possession and use of such "signal cannons".   Not saying that I have ever had possession of such an item...but, I do have some "knowledge" of things of this nature. The site above is a good source for fuses and using the guide below (I am NOT the author) is just a simple reference point for loads that should never be exceeded.  Toilet paper or paper towel material is good for wadding.   Never, ever use any kind of projectile in a "signal cannon".    Above all, don't be an idiot when handling such things and use common sense.   The internet & youtube is your friend for expanding your knowledge of such things and entertainment for seeing the gene-pool nearly reduced.   

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