Well I swapped the position of my regulator to create a larger plenum space. I have a Vulcan 3 30cal the shorter version. Stock it was pushing the NSA 49gr to an average of 805fps. After the swap " no hammer adjustment " average of 848fps. Not sure of the shot count as pellets are not easy to come by anymore. Just thought I'd pass it alone if anyone else was thinking of doing this. 