PSI refers to the maximum fill pressure of the bottle, and has no relation to the size.Cheers for the help guys,
As far as air systems go, is the difference between a 4500psi bottle and 3000 psi bottle, just that the 4500psi bottle stays at operating pressure for longer? Or is this dictated by the size of bottle, eg 1.1l? Or combination of the two?
I.E: A 3000Psi 1.1 L (68ci) Bottle is the same size as a 4500Psi 1.1L (68ci) but the 3000Psi can only be filled to 3000Psi, though the 4500Psi can be filled to 4500Psi. So you get more shots from a 4500Psi but the size is the same.
HTH