FX Crown and JSB 33.95 MKI

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NL-Law

NL-Law

Member
Nov 11, 2017
159
10
Newfoundland, Canada
Hey All

Trying to find the best settings for a .25 FX Crown Shooting 33.95 MKI JSB pellets. 

From whar I’ve read on here, it seems that I should be looking for 850-860 FPS for best results. 

2 Questions:

1. What BAR did you set your regulator to in order to achieve this?; and

2. I can increase my regulator pressure with air in the gun, but cannot decrease it unless I drain all air? (Just want to be sure I have this right.)

Thanks All!
 
Reducing regulator pressure without degassing, see bottom of my tutorial:

http://www.airgunnation.com/topic/fx-crownimpact-regulator-mod-tutorial/#post-270615

Regarding settings, I have the regulator set at 150bar to get around 900fps, but I have a .25 LW poly barrel installed. Could be that the STX likes a lower speed, but it is easy to find out with the adjustment knobs of the Crown. Try what it likes best :)

Note: The .25 an .22 Crowns need more hammer spring tension to reach higher speeds, it might need re-adjustment of the sliding block. (Stock needs to be removed for this)
Mine was is a 30cal originally, which is already set up to reach higher speeds.
I'll see if I can also make a tutorial for this.
 
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