I am getting some pretty big swings in FPS on the various tunes I am trying to dial in. I just want to settle on one slug that shoots beautifully and one tune that I never change. I have tried 130 bar & 3.5 for Javelin 36 and H&N 36 II. I also tried 150 bar and 3.0 ish to get 980-1000. The FX pocket chrono shows strings between 960 and 990. on the Javelins (H&N's go a lilttle faster but still vary) I attempted to back the micro wheel down down to find the "Velocity drop point", but it dropped off pretty quick below the micro numbers I used. Any advice would be appreciated. (FYI, I am not a competiion shooter and use the gun for hunting). Thank you
FX FX Dynamic .25 600 tuning problems
- Thread starter Hudsonii
- Start date
Is it fairly new probably needs some settling in is it accurate or does it group well if it does I wouldn't worry about it
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That's a clue the reg is too high or the hammer strike is too weak. Two sides of the same coin.
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It does group well and it has about 100 slugs through it.
I don't know... Is 130 too high? Should I run it down further?
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From what I've read the reg likes to be on the lower side. You could try starting out at 100 bar and slowly go up from there.
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100 slugs is not enough to settle the gun usually. I generally will not attempt a serious tune until at least 500 shots down range and prefer to wait more than that.
With the Dynamic block all adjustments need to be in small increments. Much smaller than a lot of people are used to. A few bar or one click of the micro wheel can make significant changes.
How did you arrive at the settings you showed?
Were it me I would be starting with a lower reg pressure than 130, maybe 110 and the micro at around 2.5 and work my way up from there.
With the Dynamic block all adjustments need to be in small increments. Much smaller than a lot of people are used to. A few bar or one click of the micro wheel can make significant changes.
How did you arrive at the settings you showed?
Were it me I would be starting with a lower reg pressure than 130, maybe 110 and the micro at around 2.5 and work my way up from there.
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I will take this advice and move the Regulator down. The pressures I started at (130 came from a Panthera Video as did the 150) I'll also keep attempting to dial it in as the slug count goes up. Huge appreciation
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