Does anyone use other gases than air?

[billzweig]

Compressed gas cylinders are usually filled to about 2500 psi, so not suitable in application when you need higher pressure. Compressed hydrogen cylinders are available up to 10,000 psi and common in hydrogen powered vehicles. Compressed hydrogen have some interesting characteristics that could work very well in a airguns, though I have not tried it....

 

[ua5qb]

Dagwodzz, May thanks. Slowly extending my knowledge in this area.

Bill, My thinking is that if the Oxygen is removed the flow of gas would be more efficient, i.e. drier. On occasion I've noticed a slight vapour trail when shooting. Which is why I started enquiring about Hydrogen in a PCP. Dag seems to have been doing it successfully for sometime...so it appears doable. Just how doable, without having to buy a large cylinder of Hydrogen...

 

[Springrrrr]

I use methane, it increases the power by a factor of ten.

 

[lenweber2]

I'm not gonna ask where you get the methane, but refried beans is a good source. Heard mock 3 was average velocity, and gorilla tape to reinforce the barrel. Moderators are useless and muzzle flash is to be expected.