ALIGN PROBE WITH TRANSFER PORT, IMPACT

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i don't have it in mm but 44.3 is (according to you) is just on the edge of lining up but if i convert it to inches seams way to far 1.744. As not to confuse things this is the way i did mine. not saying there isn't another way. The pellet probe lined up in the barrel on my gun is .604. measure from edge of brass to inside shoulder of pellet probe. Off the gun.
Now put the probe and barrel back on the gun take off back cheek rest and remove one side of the shoulder stock measure where you did before with the bolt closed of corse.
you can convert my # to mm but i would use your own mic and your own # 
probe out to far .609.......15.4684mm
probe in to far .599.......15.2146mm
sweet spot .604.......15.3416mm
Now if it is off you got to take the gun apart. Ernest videos can show you that hope this helps
 
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Download the Impact Drawing and part list here.

http://www.fxairguns.com/wp-content/uploads/2016/06/impact-view-Sammansättning.pdf

This can void your WARRANTY.
Ernest Rowe has a video on how to disassemble/assemble the Impact here.


You have to remove the Guiding Plate (B14) to access Reloading Bar (B19). The Feeding pin Guide (B12) is threaded on to the Reloading Bar (B19). See page 8 of your FX Troubleshooter Guide. You can adjust the overall length of the Feeding pin Guide and the Reloading Bar to help with transfer port alignment.

 
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Gixxer, my top speed is 860 with JSB Exact King Heavies...and that's with the regulator up around 149-150. Others are getting speeds up to as high as 900fps with Heavies. I'm not too interested in hitting those high speeds except I'd kinda like to see how these heavies fly at say 880. I'm getting a lot of fliers at slower settings. I do get my best groups now at Max...was getting good groups at A but after trying Max...they are just a little tighter with fewer fliers, though there are some still. Thinking a proper alignment might minimize turbulence (might be the flier culprit) and max velocity ....maybe 20-30 more fps? If my probe is at 44.3mm and the troubleshooter calls for a setting of 44.4-44.7mm then the ideal should be say 44.55mm and to me that's a significant out of spec.number.
 
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I can understand you want to try something if youre having accuracy issues. I dont even know the fps of my own .25 impact which i have had for 10 months and i even have a Chrongraph.

But 10 mins ago i did a headshot (where i aimed) on a Crow at the top of a pretty high treetop at 50 meters with MK2´s, so i guess its working.
But now i got curious about is so might aswell set it up and see =)

-Edit-
4th line on adjuster barely visible and wheel on max. I think the regulator is a little under 150bar judging from fillpreassure and readout from scubatank which is more accurate then the fx gauges.

25,4g = 293m/961fps
33.95g = 266m/873fps
 
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The easiest most definite way to check IMO, is to load a pellet in the barrel like you normally would. De-cock the gun, pull the barrel, pull the probe and slide the probe to the base of the pellet you just loaded and visually check it. Just be aware the probe retracts ever so slightly after chambering the pellet.
Click to expand...

Yeah that's a great way!
 
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