FX Chorny

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I recently got an fx chorny and I find the spread is off like 40 fps. I’ll get a high number then a low number. And this is on my FX Maverick 25 cal. I have the reg at 145 bar from factory and hammer is at factory setting. Just seems like a new gun should be more consistent. First pic is jsb MK2 and second is nsa 26.9. The spread was even worse with the hybrids. But I shot some groups and they were all hole in hole at 30 yards. 
 
Mine is a compact in .22 , I don’t remember exactly all the numbers but with second reg at 120BAR, 11g hammer I was sending JSB 25.4 at 890fps with ES of 20fps, I’m sure I could get closer to 10fps but changed my mind and decided to go different direction. 
Now I’m trying to shoot JSB 15.9 under 20fpe so my reg is at 90BAR but my hammer is to heavy for this pressure so my ES is over 40fps. 
B


 
Thanks b I’ll check it out. I really want to change the reg gauge to a wika so I guess this is a good sign. I’ll try lowering the second reg. My plan it to try and mainly shoot nsa 29.5 tune around that and have a pellet on the same tune. But mostly the 29.5. I’ll have to play around with the reg ans hammer. See if I can get the ES down. At one point it was at like 40 fps. 
 
Has anyone messed with that return setting on the FX Chrony. Or does everyone leave is on 20%

I leave mine on 20%. Yesterday, I was shooting my p-rod and not getting any readings. Then, I remembered to change the settings to pistol, and all was good. I had previously set it on the highest setting for my Daystate Wolverine HP R. I was comparing my FX to my Caldwell Precision Chrony and found that the FX had consistently slower readings than the Caldwell. Heavier pellets where narrower in their difference.


 
Has anyone messed with that return setting on the FX Chrony. Or does everyone leave is on 20%

I leave mine on 20%. Yesterday, I was shooting my p-rod and not getting any readings. Then, I remembered to change the settings to pistol, and all was good. I had previously set it on the highest setting for my Daystate Wolverine HP R. I was comparing my FX to my Caldwell Precision Chrony and found that the FX had consistently slower readings than the Caldwell. Heavier pellets where narrower in their difference.


Yesterday my numbers were 40 fps difference. I was like no way it can be the gun. But I may have to play with reg or hammer spring just to see if it’s different. It seems like the heavier ammo is more consistent. Fx hybrids are to expensive lol. 
 
Yesterday my numbers were 40 fps difference. I was like no way it can be the gun. But I may have to play with reg or hammer spring just to see if it’s different. It seems like the heavier ammo is more consistent. Fx hybrids are to expensive lol.

What chrony were you comparing your FX chrony to?

Like I said, my FX always gave a slower reading than my Caldwell. My differences were 10-8 fps slower with the 14.36 gr pellets (avg = 8.9 fps) and 8-5 fps slower with the 25.07 gr pellets (avg = 5.9 fps).



Here's my original post:

https://www.airgunnation.com/topic/fx-chronograph-vs-caldwell-precision-chronograph-fx-was-always-slower/#post-994840
 
Yesterday my numbers were 40 fps difference. I was like no way it can be the gun. But I may have to play with reg or hammer spring just to see if it’s different. It seems like the heavier ammo is more consistent. Fx hybrids are to expensive lol.

What chrony were you comparing your FX chrony to?

Like I said, my FX always gave a slower reading than my Caldwell. My differences were 10-8 fps slower with the 14.36 gr pellets (avg = 8.9 fps) and 8-5 fps slower with the 25.07 gr pellets (avg = 5.9 fps).



Here's my original post:

https://www.airgunnation.com/topic/fx-chronograph-vs-caldwell-precision-chronograph-fx-was-always-slower/#post-994840

I wasn't comparing my fx chrony to anything. That’s all I had to shoot with. I have a Caldwell but hate using that thing. The chrony was showing an ES of 40 fps. That’s what I asked if it may be the placement of the chrony or the gun not set right.
 
I wasn't comparing my fx chrony to anything. That’s all I had to shoot with. I have a Caldwell but hate using that thing. The chrony was showing an ES of 40 fps. That’s what I asked if it may be the placement of the chrony or the gun not set right.

Oh, I see. On my light pellets i had an ES of 61 and on my heavier pellets it was 77. Looks like your FX is doing pretty good. Even though my tins give the pellet weight, it is my experience that the pellets rarely weigh what the tin claims. I'm thinking that may explain the ES we're getting.
 
How do you have it setup when using? On your gun? Or shooting over it? If on your gun I'm gonna say definitely your guns tune is the issue more so than the chrony. Mine was very accurate with my guns. Now differences between readings on different chronys I wouldn't be too concerned with that. 2 different ways there measuring at 2 different locations so within 10-15fps is no big deal. Can't guarantee which one is more correct anyways 
 
How do you have it setup when using? On your gun? Or shooting over it? If on your gun I'm gonna say definitely your guns tune is the issue more so than the chrony. Mine was very accurate with my guns. Now differences between readings on different chronys I wouldn't be too concerned with that. 2 different ways there measuring at 2 different locations so within 10-15fps is no big deal. Can't guarantee which one is more correct anyways

So I have is mounted on my gun. I have a Donny koi and it’s rubber band in the middle. It’s hanging on the barrel. Like they show in the setup menu. I’m looking at 28mm gauges from treiner outdoors about to order. To get a better reg reading.