great cannon id just add a chamber fan

I already have a fan with a momentary push button switch and an 8x AA battery pack hooked up in the 3" chamber for my next gun. I also have an old 100,000v stun gun I'm going to dig up for my ignition source. About that, do you normally use the trigger on ...

Thanks. I'm surprised it wasn't immediately ripped to shreds here. I have the parts to put a 3" id chamber on my next gun, but this uses 2" because that's what I had on hand. If I didn't have the parts already, I wouldn't have thought to make this, and I never would have found this site.

The ...

Here is a small gun I made last week. I thought I was being original by making a spark gap for ignition, and for bending he chamber down around the bottom of the barrel, but after finding this site I see that I just did a poor job of reinventing the wheel.

The barrel is 38" x 1.25" and the chamber ...