Originally Posted by Zethis
A x psi tank is usually built to withstand 2 to 3 times x psi. But don't fill it past the x rating for safety reasons.
So ya, go ahead and fill that 4500 to 4500 and don't worry.
Just cause the tank is rated to be filled at 4500psi doesn't mean the reg is.
If you have a 3000psi reg on a 4500psi tank, you can only fill to the lowest amount and visa versa.
I get well over a 2000 shots on my 68/45. It all depends on the marker you're using.