Originally Posted by
wild boar
i have had to put a sleeve in between the valve and the spring retainer as the air was pushing the nylon and o-ring back up the tube against the spring rather than going thru the valve to fill it ,
i put maybe 1000 psi in to try and got 330 fps with 45grain (around 11foot pounds )and after a few shots it dropped some - not much but its the sleeve i put in restricting the flow - that was with air but i think co2 might be similar in power but would be safer as i dont know what pressures the cylinder would stand - i did not dare put more than 1000psi in , i will leave it at that as i am pleased to be able to shoot it a little allthough i am wondering if i could sleeve the barrel to .177 (only if its totally reversible without damaging it at all )it could be a nice thing to use
You will not get many shots with 1000 psi of air, the power will drop off rapidly. CO2 is much better, giving many more shots at a fairly constant velocity especially in warm weather. With CO2 you have a dense liquid supply that is slowly vaporising to gas. With the air at 1000 psi it is constantly falling in pressure at every shot.
Baz
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