If I would call it plain cool, then I would be lying.

Alright, here's my newest almost nice looking and almost powerful little piston cannon that I've been working at for a LONG LONG LONG time. The chamber is 79 cm of 1" black iron, the barrel is 1/2" plastic electrical conduit tubing. The piston slides indise a 1" brass nipple, the bumper is a piece o...