I am trying to get my MK1 .30 Compact (500mm barrel) around 850 FPS using JSB 44.75 pellets. I have installed the MK2 PP.
I am starting with hammer max, port at 4 bars.
At 100 bar I get around 750 FPS, as I move the reg up to 125 bar I am in the 790-800 range, but any pressure beyond that, the FPS starts to drop.
I am going to inspect the Impact and check probe alignment to barrel, not sure what else to check. It is an older impact, so maybe hammer and spring needs inspecting?
I am starting with hammer max, port at 4 bars.
At 100 bar I get around 750 FPS, as I move the reg up to 125 bar I am in the 790-800 range, but any pressure beyond that, the FPS starts to drop.
I am going to inspect the Impact and check probe alignment to barrel, not sure what else to check. It is an older impact, so maybe hammer and spring needs inspecting?