These are the shot strings I got with my Red Wolf 18fpe .177cal with JSB 10.34gr pellets. I realize it's not the .22cal HP but it might give someone some insight into how the electronics work.
High Power shot string. 10.34gr JSB, single shot tray. FX chronograph.
Shots 1-50 Start 230 bar, end 203 bar.
Average 896 High 902 Low 888 Spread 14.0 Std Dev 3.2
Shots 51-100 Start 203 bar, end 180 bar
Average 901 High 909 Low 888 Spread 21.0 Std Dev 3.9
Shots 101-150 Start 180 bar, end 158 bar
Average 901 High 909 Low 888 Spread 21.0 Std Dev 4.3
Shots 151-200 Start 158 bar, end 137bar **Low pressure warning came on at 142 bar - shot #188**
Average 896 High 902 Low 888 Spread 14.0 Std Dev 2.9
Low power.
Shots 1-50 start 227 bar, end 209 bar.
Avg 729fps, High 745fps, Low 707fps
Shots 51-100 start 209 bar, end 194 bar.
Avg 746fps, High 765fps, Low 726fps, Spread 39.0, Std Dev 8.8
Shots 101-150 start 194 bar, end 178 bar
Avg 771fps, High 782fps, Low 754fps, Spread 28.0, Std Dev 6.2
Shots 151-200 start 178 bar, end 164 bar
Avg 786fps, High 796fps, Low 768fps, Spread 28.0, Std Dev 5.7
Shots 201-250 start 164 bar, end 149 bar
Avg 788fps, High 800fps, Low 777fps, Spread 23.0, Std Dev 4.8
Shots 251-300 start 149bar, end 135 bar
Avg 784fps, High 793fps, Low 763fps, Spread 30.0, Std Dev 4.9
Shots 301-350 start 135 bar, end 121 bar
Avg 779fps, High 791fps, Low 768fps, Spread 26.0, Std Dev 4.8
Shots 351-400 start 121 bar, end 108 bar
Avg 773fps, High 779fps, Low 759fps, Spread 20.0, Std Dev 4.2
Shots 401-450 start 108 bar, end 94 bar
Avg 779fps, High 789fps, Low 768 fps, Spread 21.0 Std Dev 5.5