I'm assuming you mean the reg. gauge on the bottom of the rear breach block, honestly I didn't look at between shots, and I don't have the gun in my possession right now to check it out. I received the gun with the reg. needle reading just over 150 bar, I have noticed that depending on tank pressure the reg. gauge will fluctuate from a little below to a little above 150 bar, but I haven't really established any predictable relationship at this point. I just noticed that when there was like 10-20 minutes since the last shot, the next shot would always be low on the chrony. When I do get it back I'll be a bit more cautious in my observations to isolate issues and character flaws of the gun, I don't want to jack your thread, thanks for the input, I know where to find you if I get jammed up. Just a thought, when that thing goes back together, all of those barrel support bores need to be in perfect alignment, on the same axis, it would be ideal to have a precision ground arbor to slide in place while tightening all the screws, at least that's how I'm going to do it. Thanks again, holler!