Then at night we took the gun outside to shoot some glow sticks. I charged the gun to 110 psi and shot the glow stick at that one tree. Glowing mist flew everywere, it was pretty cool. I routinely get close to 200 yards out of it. Here's a few improvements that will make your gun work a lot better.
Longer barrels work better for PACS because there's a lot more power behind the spud.
With comb's, there isn't nearly as much power and the friction in the barrel will over power the pressure pushing the spud, slowing it down considerably if the barrel is too long. If it doesn't fit, use a large drill bit to shave the cap down a bit so it can be bolted in good. If you have a good fit, glue isn't necessary. Comb's rely more on expanding gasses than the actual explosion, with the spark at the end it will push more gas. My heart almost stopped, I quickly put everything away and assessed damage, the roof had a big mark on it and a chunky dent.