I did not want to change a lot of things so I left the same reg pressure of 100 bars (just below 100 actually)
I ended up giving two extra clicks on the HST adjuster going to the 18th overall from zero…
I got 16 full power shots from 220bar to 100 bar
790fps with extreme spread of 15fps h&n 19.91 grains
Haven’t had much time to play with this, but with JSB Kings (25.4gn) I have 8 shots at 772fps, 4fps ES, from 220bar to 120bar, Huma regulator set at 120bar, 18 or 19 clicks on the hammer. This is the short 250mm barrel. I tried reg settings at 110bar and 115bar, but could only get 740 fps there.