I have the new .25 cal fx impact mk2 with the stock power plenum 600mm slug barrel shooting 33.5 grain nsa slugs. I can't get over 938 fps! Here is how i did the quick tune to figure this out;
I backed out the valve adjustment knob past line 4. I Maxed out the hammer spring with the Allen wrench just so that the power wheel wasn't binding. I started at 100 bar and went up in 5 bar increments (digital gauge) to 160 bar. I used the power wheel from Max to min to get a ball park fps for that reg setting. The max it hit was 938 fps?
I totally disassembled the gun and checked everything for tightness and check all the orings and everything is perfect (new gun). I can't figure it out! My goal was to get it around 950 and fine tune down from there.
If you have any suggestions or tell me your tune for this that would be great! Thanks!
I backed out the valve adjustment knob past line 4. I Maxed out the hammer spring with the Allen wrench just so that the power wheel wasn't binding. I started at 100 bar and went up in 5 bar increments (digital gauge) to 160 bar. I used the power wheel from Max to min to get a ball park fps for that reg setting. The max it hit was 938 fps?
I totally disassembled the gun and checked everything for tightness and check all the orings and everything is perfect (new gun). I can't figure it out! My goal was to get it around 950 and fine tune down from there.
If you have any suggestions or tell me your tune for this that would be great! Thanks!