FX New Impact M4 owner and Autumn Nation member

Thanks for add. đź‘Ť
Have recently upgraded from an FX Dreamline Classic .25 cal to an Impact M4 Sniper in .25 cal.
I must say that the external tuning of the Impact is so much better than the Dreamline.
That being said, I was shooting the JSab Hades out of the Dreamline to good effect (not the tightest group but consistent grouping) and was hoping to achieve the same or better in the Impact.
I had them punching at 880fps in the Dreamline so dialed up the Impact from factory settings to get the desired speed however the groups have been less than optimal. Speed increase up to 925 fps saw a bit of improvement but not consistent enough. 5 shots stacked at 50m with 5 shot groups either side with 2-3 shots stacked and 2 flyers.
Hoping someone may be able to give me an idea of speed they are seeing consistent results at (and or settings although this might not work gun to gun).
Was also hoping to find a tune that worked adequately with lightweight slugs (FX Hybrids or Zan) with the factory barrel liner and not much other mods if possible.
Anyway, I think that’s enough for my first post.
Cheers,
Rob (Ooter Outdoors).
 
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Barrel lottery.

The biggest mistake one person makes is letting go of a great shooter and going back to the casino...

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Does it shoot other pellets well ? I have always had great results with fx liners with hades or atomic pellets. Just curious if something else is at play.
I haven’t tried any other pellets as yet. I had some others for the Dreamline but just have shot them off.
That is my next move though if the Hades don’t want to play ball.
 
How any pellets have you shot out of it? I will shoot close to 1000 before I attempt to do a final tune on my FX guns when new. Basically let everything break in or settle in.
What is your reg set at? Micro tuner setting? Valve knob setting.
All these things are critical to good accuracy. You may be getting too long of an air burst and causing poor accuracy.
It may be you have a barrel that is not as good as your Dreamline but that is a conclusion that can only be made once you have exhausted tuning issues
 
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How any pellets have you shot out of it? I will shoot close to 1000 before I attempt to do a final tune on my FX guns when new. Basically let everything break in or settle in.
What is your reg set at? Micro tuner setting? Valve knob setting.
All these things are critical to good accuracy. You may be getting too long of an air burst and causing poor accuracy.
It may be you have a barrel that is not as good as your Dreamline but that is a conclusion that can only be made once you have exhausted tuning issues
I think around 220 pellets so far so still in early stages. Reg is at 95 (ish), valve is on 4, 16 on the macro still at 16 and micro I think is around 3.5 atm. Everything bar the micro I haven’t touched as yet (so factory).
Still working my way through stuff but knowing what sort of speeds are seeing good results in Impact’s 700mm would give me a starting point (noting not all barrels are the same).