Gary

That's why The other thing is about ******* the gun: If you fill the valve with liquid CO2 and then let it go into a primed barrel you have x ammount of CC's of rapidly expanding liquid at 860 psi behind your little pellet, the increase in volume would be massive and would continue to expand (as the CO2 boiled) as your pellet moves down the barrel, accelerating it all the way. Pellet velocity is constantly increasing and a wedged pellet could cause quite a few problems in a valve/barrel not used to that kind of back pressure. That's my theory anyway I still don't see why you couldn't use any other stable inert gas though, like Argon or better still helium... You could make silly voices if your buddy bolttle valve leaked as bad as mine does

Hi Justme, CO2 at pressure is a liquid and I think you'll find that CO2 bottles are thinner/lower rated because they are pressurised at much lower rates than O2/Air, Argon and the like. CO2 and O2/Air aren't interchangeable. Also, because CO2 is a liquid at pressure and as someone has said, if you have a half filled bottle and the tepmeprature rises your CO2 vapour pressure will rise as well. So, if you put liquid CO2 through your PCP valve it will probably knack it or the gun will be under extreme pressures as the CO2 boils off. I don't know but I'm guessing that the pressures in the gun valve are relatively low compared to the pressure of boiling CO2 (I think CO2 boils off at 860 psi which is about 60 bar), the point being that if liquid CO2 gets into the PCP gun valve and it's boiling the vapour pressire will rise inside the valve and could exceeed the guns normal working pressure. As someone has said the Acetylene cylinders are filled with capok. It would be easy for anyone just to say "For **** sake don't do it!" but sometimes finding out why you shouldn't do it is much more fun and much more interesting

That was quite hard to understand the first time. Ben I tried 3 times and gave up :blink: A friend and I were given permission to shoot the grounds of a holiday cottage we were staying at in Devon. We asked about pigeons intially but he he yes to that but you could help me out a lot more if you nailed some rabbits. The owner had his horses in the field (he hunted) and was fed up with them but didn't have the time to get on top the problem himself. We shot so many in during our stay he gave each us £5 off the bill :blink: I'm sure if you put yourselves out you would have got the gist. What will be next picking on people for feral apostrophe's?

Thanks pin (VP90 on order :()

How do you release a buddy bottle on a PCP if you don't dry fire it? I ask because that's how I've been told to reduce the pressure between the bottle and the gun when taking off the cylinder. Loosen buddy bottle, 6-10 dry shots (at the ground obviously) then spin bottle off. Most people at the plinking range when finished remove the magazine, throw the bolt, point the gun at the gun at the deck and fire dry. Are they telling me wrong?

Just a supplemetary question (I have tried search but either I'm **** at it or there isn't a question about this); If you take your gun and scope out in the rain/snow/sleet type weather, how do you protect the gun and scope? TIA.