Fx wildcat .22 fps

Pellet probe was 29.1mm, changed it to 28.65mm, but at every setting i have tried the fps drops when i have around 152 bar, i get between 34-36 shot on every setting i tried, my latest fps was between 918-906 fps, but shot 35 was 898 fps, and shot nr 40 was 885, dunno what is wrong.

I tried the Fx reg tester from huma, it shows 120 bar, so its kinda strange that i loose fps when i have 152 bar left. With Fx reg i shot down to 121 bar.

Gonna try the reg at 135 bar and see what happens

Huma reg shows regulator pressure, i have 2 Fx Pcp hand pumps at home, both shows about the same pressure in my air tank as the Fx reg

At 135 bar i had to turn the hammer spring all the way in and that gave me 3 shots at around 912 fps, the rest was error shots since the sun went down behind the trees, 1 thing i noticed is that the gun were more quiet.

but i heard that hammer spring turned all the way in is bad for the gun?

Maybe i should try to lower the reg to 128-130?

So sick of hand pumping now

Huma reg at 128 bar i could get around 941 fps with Jsb 18.13 gr, but i turned it down a bit with hammer spring, did 2 full shot strings,

had around 228-230 bar, first string gave me 61 shots, 2nd string was 60 shots, but i get 4 more good shots when it falls off the reg. Low 896 high 912 with average of 904 fps, i did no pellet sorting.

First shot after 10 min of resting huma also gives a lower fps on first shot, around 32 fps lower...

Took huma reg out and change the valve disc since it had som creep, changed bar setting to 121 bar, gave me 902 fps with Jsb heavy, and that is the fps i prefer.

im out of Jsb heavy now, ordered 10x250 shots on sunday, hope to get them tomorrow.

Every bar on huma reg seems to give 9-11 more fps