I would not be willing to sign off on any design as the result of a single pressure test.... at least not if the calculated safety margins are low enough that I have any concerns about fatigue life.... All that a test would show is that that one gun is OK at the moment.... Besides, it's not really up to me, I'm not selling them.... Mike is using a commercially available CO2 rifle, not making anything weaker, and recommending it for 1500 psi, which is within the pressures that the rifle may see in use with CO2 on a hot day.... All I'm doing is cautioning people to listen to his recommendation and treat the rifle like what it is.... a modded CO2 platform.... I am NOT an engineer, just a concerned hobbyist with a bent for arithmetic.... I make exactly the same statements for a QB/AR.... If it's regulated use a 1.8K burst disc and set the regulator for 1500 psi maximum.... If it's not, just don't fill beyond 1500.... Either way, it's just my opinion....Bob
The reason why I had mentioned the possible leak is that I have two .177 CO2 models. Both have held pressure with CO2 over a period of time. One rifle was for indoor CO2 shooting and the other I am using to see if it is worth converting to bottled HPA. Anyways I had restricted the barrel port on one of the rifles to slow it down. I can feel pressure on my face when shooting the restricted rifle and not the other. Adding a modification to these statements. I will have to pull the valve out to see if the seals were damaged when I install them. That may be the problem.