this is what i did http://img405.imageshack.us/img405/7370/cimg0123el6.jpg http://img405.imageshack.us/img405/688/cimg0125kp4.jpg Its pretty cold and its a poorly constructed barrel but even in the black of night i saw a signifigant increase in projectile range. The gun used to fly backwards and fir...

so is doing something like adding an extra pen tube to the existing one enough?

my friend made a paintball barrel for his combustion cannon and it worked really well. He used a 3/4 " pvc for the barrel and the paintball was not a perfect seal but it still worked well.

i used some paper towel to wad it and then put in the bb. When i fired it went signifigantly farther than before. This is probably a very newbish question but what do you mean by a 10:1 ratio for the barrel? Also i think alot of the force of the explosion is escaping out of the cap in the back, any ...

i just made my first mini. It uses harispray and is a pill bottle, pen tube, and grill starter. http://img101.imageshack.us/img101/7379/cimg0118sj2.jpg http://img464.imageshack.us/img464/5093/cimg0120pe4.jpg Igniton(2 nails) http://img391.imageshack.us/img391/2866/cimg0121ba2.jpg The gun does work, ...