FX IMPACT COMPACT TUNES MK2

Looks like you have it dialed in! Thanks for sharing as I have a Impact MK2 in .30 and am looking at getting a .22 barrel kit for it. This looks to be a good starting place. May save me some tuning time!

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CF bottle volume?

 I'm not saying that isn't a great tune but with all the things you can adjust on that gun I am not surprised you can achieve such numbers. The picture ( not very neat) shows a shot string for a full 580cc bottle. The gun is regulated but I have never touched it. The gun only has a hammer spring to adjust. I like simplicity and I am not sure I could get all the settings the Impact has right . I am amazed at the flexibility you have with the impact though. Enjoy it.

Great, tight spread

What's your reg pressure? 

That's incredible! I only get 60 shots @ 895 fps same ammo and thought I had a good tune same barrel and bottle.

The hand written shot string I posted was supposed to state it was shot with FX400 with 18.1 gn JSB pellets.. I wrote it in the note on the chart. 

@douger, you nailed it my friend. Enjoy the sweetness of success.

Patrick

I'm running my mk2 compact on 90bar with the valve adjuster all the way in to the first line. 16gr AA at 860fps with very similar consistency and it's like threading a needle at 50m. Gives so many shots I haven't bothered counting beyond the 6 1/2 mags I shot one day off a full fill at the range.

I'm running a 480cc bottle with a huggett directly attached to a Hein Frommann tensioned barrel, so the bottle and shroud end at almost the same spot. Might well be my favourite gun overall.

What is the max speed you can get with 18 grainers and 95 bars on reg?

That is an incredibly consistent shot string.

mike

those numbers do help thanks