Anyone in the St Pete / Tampa FL area that has a Fx Impact that knows how to tune one the right way. Also wanting some shooting and hunting friends in my area. About my stick: Im the owner of a new to me FX Impact MK2 with the 700mm .25cal STX premier heavy liner and the utah airguns .25cal slug probe and block. I just ordered Ernest Rowe"s duel port.. Im shooting the NSA 34.9grn flat back slugs. Made a few kill shots out to 200 yards so far but I noticed the ballistic data on strelok pro was off a little. I guessed 920fps when entering data on the app. Well I dug out my old trusty chronograph and put a few rounds through it. I was at 806fps. So needless to say i was way off on my guess. I was at 130bar on the power plenum and way out on the hammer spring set screw. So i started to tighten the set screw to the hammer spring slowly also opening up the reg some and watched the numbers rise. I ended up at 150-153 bar and now im at 922fps. I feel like this is still kinda weak for 150bar and the hammer spring hitting so hard. My goal is to be at or just over 1000fps