SpudFiles

Just Imagin the 1.5 porting valve from my site on there!!, or the samler on like the 1" porting one and it would still be awesome

Dan, it says combustional launcher on there, which is not a word, just put "combustion" and "alot" should be "a lot". just giving you a heads up. If you cant use correct grammar/spelling, I am not sure people will buy from you. not being a jerk, I'm just giving you a warning, trying to help.

oh, it is in the pneumatic section part of the site.

trust me, 250 is as high as you want to go.
I once took some 3 inch to 280 and it blew, peices if PVC had gone through two gallon sized paint cans!!!
If you do try it at least cut up a few pairs if jeans and cover the tank with a few pant legs

Covering it in jeans does nothing

the best you can do to avoid being hurt and damage things around you is: taking safety measures! and the best way to take safety measures is "don't push the cork to far..." (french expression lol i don't know if it exists in english! )
just don't use plastic for high pressures. Use copper or steel. i'm currently building a pneumatic rifle with all the possible features on it lol, it's made of copper brass and steel. barrel sealing piston, bolt reloading, high pressure, multi calibers, laser and scope. lol it should be finished in a month i still need the get some pieces.
by the way, your cannon rocks, killa!!! you should definately try to bring her up at 150 psi. but aim wisely!

well if you wanted 300 psi you could first get a metal chamber, then a ball valvwe and a 12 gram CO2 adapter and use a couple cartridges per shot, the ball valve would just be closed after each fill so no air would leak back out the adapter, just curious tho, for a high powered shot like that, what do you plan on using for a bumper? spring maybe?

I allready use a spring for a bumper.

Nice lil gun but one problem were is the damage pics?

Haha, I havn't really been shooting stuff, just shooting distance.