reynolds357
New member
I am sure someone else will be able to explain this better. I will admit that my understanding is a bit limited when it comes to PSI and actions. PSI is not the only factor you have to take into consideration. It is not just how much psi the cartridge exerts. It is how long it exerts the PSI and what area it exerts it over. We often use hydraulic bags to break rock ledges in quarrying. You can put a bag that has 144 square inches of surface area in the cut, pump it up to 3000 psi, and it not break the rock. You can then put in a bag with 576 sq inches of area and it usually will break the ledge at around 1200 PSI. The same principle applies to actions, but I can not tell you exactly how.