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Since there seems to be a lot of guys here with or getting ghosts i thought id give a couple of my thoughts on tuning. It seems a lot of guns are coming at 165 bar and in my experience that is just wasting air. I have a hp ghost for field target which when i first got it was way over 20 fpe at muzzle. I could only get below at 80 bar and hammer wheel was basically useless the the only way to adjust velocity was very fine (very!) reg adjustment and that was with then the lightest ( 12 fpe) hammerspring. Then i got the spring kit and the lightest spring was lighter still. Now im at 100 bar and pw 11 the wheel has adjustment too.
Now in 22and 25 im mostly shooting with the stock hammer spring but im shooting heavy projectiles too! To shoot very light projectiles a lighter spring and lower reg might be better. For heavy projectiles im at 135 bar
Need to add the 25 i hit a tune right away that was very accurate after polishing the barrel. The 22 i also hit a tune @ 960 fps with mrds that was very accurate but i got a lot of flyers. 22 saw the least tuning
Now with 30 cal it came to me with high reg (165) shooting 50’s at i think it was 950. I couldn’t get below 900 fps or 80 fpe even with the reg turned down and pw on 1 so out came the black spring and in went the red now at 120 bar pw 16 im at 79 fpe 36 shots
Something else ive noticed is from 17 or 18 to max on the power wheel velocity change is very small irregardless of reg Pressure also sd in that area is generally higher than if you go to 17 or less. My sd went from almost 3 to 1.5 with 13 gr jsb slugs at 134 bar 1030 fps to 1016 fps
Im not necessarily the writer that @Franklink is ( frank link has written a good deal about the ghost- good stuff)but these are things I’ve discovered that will hopefully help some of you guys out when tuning your ghosts! Chuck
If anyone else comes up with something different or unusual please add. This is us trying to help us!
Eddited a few things for clarity
Now in 22and 25 im mostly shooting with the stock hammer spring but im shooting heavy projectiles too! To shoot very light projectiles a lighter spring and lower reg might be better. For heavy projectiles im at 135 bar
Need to add the 25 i hit a tune right away that was very accurate after polishing the barrel. The 22 i also hit a tune @ 960 fps with mrds that was very accurate but i got a lot of flyers. 22 saw the least tuning
Now with 30 cal it came to me with high reg (165) shooting 50’s at i think it was 950. I couldn’t get below 900 fps or 80 fpe even with the reg turned down and pw on 1 so out came the black spring and in went the red now at 120 bar pw 16 im at 79 fpe 36 shots
Something else ive noticed is from 17 or 18 to max on the power wheel velocity change is very small irregardless of reg Pressure also sd in that area is generally higher than if you go to 17 or less. My sd went from almost 3 to 1.5 with 13 gr jsb slugs at 134 bar 1030 fps to 1016 fps
Im not necessarily the writer that @Franklink is ( frank link has written a good deal about the ghost- good stuff)but these are things I’ve discovered that will hopefully help some of you guys out when tuning your ghosts! Chuck
If anyone else comes up with something different or unusual please add. This is us trying to help us!
Eddited a few things for clarity
?? With the stock spring the LIGHTEST ammo a .22 HP will shoot well is 20gr lights and it has to be on min. I will update this post but I'm guessing I will settle on about 140-150bar. I never shoot with wheel set on max either as it sounds very wasteful on air. OE tune was 55 shots a fill/975fps/H.W. @ 15/Reg @165 for overall best accuracy with Mrds. No other ammo came close.
... my Ghost is gonna stay on its (fussy) diet of Regular and Deep Mrds mainly. I had the 20gr lights doing real well on minimum @30Y but stretched out I'd get some opening up as they were still going too fast imo. My extreme spread has not been great either, but I believe all the barrel polishing, slug testing, reg adjusting hasn't helped!
