FX Wildcat MK2 .25 shot string question.

Hello. My first post and question. Really like the information sharing from everyone. 

Wanted to see if I could tune for a bit more power out of this rifle with just playing with the hammer spring. Having no way to adjust or actually know what my reg pressure is set at, thought I'd just make due on adjusting the hammer to find it's peak.

I ended up with the hammer cap 6 1/4 turns in from first hitting the back thread. I did shot strings 1/4 turn at a time, and found that at 6 3/4 the fps was dropping. So then did my back up turning to find a sweet spot. 

Filled to 230 bar going by my gage on fill bottle that I trust. The wildcat seems to be off by 10bar. (On the lower end) in comparison to my other rifles. Stopped string when I knew it was falling off the reg. Which read 125 bar on the rifle gauge. That appears to be 54 shots with the Jsb 26.54 Hades

Here is the shot string I stopped at. Getting low on lead, so any help would be appreciated if I should call it good.

1 902 2.909 3.907 4.912 5.907 6.909 7.907 8.909 9.909 10.909 11.909 12.909 13.914 14.912 15.907 16.907 17.914 18.916 19.902 20.905 21.900 22.902 23.900 24.893 25.902 26.900 27.900 28.893 29.900 30.895 31.891 32.900 33.900 34.895 35.891 36.905 37.905 38.895 39.886 40.898 41.888 42.888 43.891 44.888 45.888 46.902 47.888 48.886 49.881 50.884 51.884 52.881 53.884 55.875 56.858