woa! mag bounce, gun getting cold with nitro!

[spacedtedybear]

what happens if you put co2 in a nitrogen tank?

It'll eat way at the tank. Co2 is acidic. The little itty bitty bits of metal you get stuck in an gun using Co2 is pieces of the tank.

[brianlojeck]

I'm pretty sure co2 isn't THAT acidic. It is all around us after all, it's not like dumping your tank in a big james-bond-villan style acid vat., I figured the chunks of metal are from sloppy/unclean filling stations (cross-threaded tanks and the like...)

I was told the big problem with co2 in a fiber tank is the temperature changes. the fiber is wrapped around an aluminum tank, and as the co2 fill cools the tank, then warms up, then firing cools the tank, then warms up, then venting cools the tank, then warms up, etc... the aluminum distorts at a different rate then the fiber, and they start to delaminate, then the aluminum starts to crack, then your tank sucks.

I've heard its "safe" to fill an aluminum hpa tank with co2, but that the seals in the reg might not like the cold, and you need to make sure you've got the right burst disks in place.