Reply To: FX Crown .22 Does this shot count seem right?

Forums PCP Airguns FX Crown .22 Does this shot count seem right? Reply To: FX Crown .22 Does this shot count seem right?

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riazp
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Hi,

I suspect that your gun is set up for .25 with those settings. I would like to see what it does at default settings first, so reg pressure at about 120-130 bar and hammer spring adjuster between 18 -18.5 mm. I really think that your FPS is great, IMHO the 18 grain jsb seem to like between 880 and 915 barrel dependant. Its a small adjustment that needs to be made to increase efficiency, but the adjustment needs to be made to the system rather than just one component, I.E. reg and spring, maybe port…

While I am far from an expert, I have generally found that with .22 air rifles, that a lower reg pressure tuned to the "knee" of the power curve tends to yield better results in terms of shot count. If your gun is performing well at 888fps then I would try and achieve that speed with a lower reg pressure. The lower set point will result in more shots, tuning the spring to the Knee will hopefully also result in a more stable shot cycle.

For reference, if you haven't seen it:

https://www.airgundepot.com/fx-crown.html