Awesome, thankx for the ideas and quick response!!! I will post it when its done

Hi, I put together an insanely poweerful propane injected cannon that fires tennis balls. I really want to make a video of it firing at various targets to show its power, but I have idea what to do that could make it interesting. any ideas? thankx

also, about by how much is the noise reduced? will it just sound like a loud "puff" rather than a loud BOOM?

sorry for all of the question

irwinner, when putting in the holes, should i put a whole bunch of them close together or spread apart? and about how far down the barrel from the end should they go to reduce the noise as much as possible?

thankx everyone for the tips and info 8)

its for combustion

yea, i'm using SCH 40 . thankx , just wanted to be sure

Ok, for my spud gun I decided to use a 2.5" barrel for tennis balls. However, I was unable to find any store that sold it. So, I decided to use 2.5" pvc electrical conduit from Lowe's. I was able to find fittings for it and primed it successfully to a 4" pressure rated chamber. But is it safe to use...

Hi, I have finally built my dream spud cannon but it is WAY too loud! However, it does fire at least 350 yds. Here are the specs: -14 inch barrel -metered propane injection (i'm currently using 37psi of propane according to the online SpudTool) http://advancedspuds.com/propane.htm -bbq starter ignit...