fx impact cal .25 adjustment of the power wheel which is the correct setting how to know how to adjust has some limit or signal for its adjustment ???? Thanks for your aswers
I have an impact X .30, and I have never adjusted anything. I need to learn all this.
Max is about 18mm
alcuerna: I have an FX Impact X .25 with 700mm barrel.
I have tried many different variations in the adjustments and have decided, for my gun, these seem to be what I call "the Harmony" .
Reg Pressure: 135 to 140 (using standard FX gauge, with the pointer at exactly on top of "1" of the 150psi )
Hammer Spring tension adjustment (wheel set at Max) measurement with caliper: 17.3mm
Valve adjustment knob (one with 4 strokes) : 3.5 strokes approx, or with caliper measurement: 9.54mm
Using Pro Chrono: and JSB's 33.95gr exact king heavy MKII
Wheel at Max: 895 to 915 fps
Wheel at 5: 870 to 885 more or less
Wheel at 4: 845 to 865 more or less
If I use the JSB's 25gr, I usually adjust the wheel to Min and still get close to those same figures, but I have not done so for awhile.
I normall shoot at setting 4. The gun is very quiet with a minimal Chook when a pellet is fired and in quite harmony. I think? I do not let it get below 150psi.
Shots between fills is 75 to 85 and I think its dependent on how I adjust the power wheel.
I hope that this gives everyone with a similar FX Impact X .25 cal and 700mm a general guideline for the settings. I am happy with it and normally shoot between 20 to 60 yds. When I take down an Iguana, I usually have the power wheel set at 4 or 5 dependent on its size.
all the best,
regards
Funshine
Fantastic, I’am going to do with all the settings and pass the information, if someone has shot with slug, please pass information, remember Impact x .25.
What more are you looking for beyond what was already posted?
I shot an Impact X 25 caliber for two days. It really liked the 34 and 36gr slugs at around 910 fps.
It's up to you to tune the rifle to the velocity you want, then harmonic tune if desired for the best accuracy. Reg pressure, power wheel and valve settings will vary slightly from rifle to rifle.