Tuning Your M3 Tunes Here

[ElGaru]

700 mm barrel 

 

[TMSFan]

Good evening. New to FX M3. I have a M3 700mm. .25 cal. Standard barrel. Shooting 26 gn JSB's and FX pellets.

Does anyone have a good tune?

I have 1st 150/2nd 95. I can't get the gun to shoot slower than 950. Do I need to raise the second reg? 

Thanks for any help.

 

[Redwolfpaul25]

I currently have my 1st reg at 170 and my 2nd at 120bar and have the front valve at 4 lines ,macro at 10 micro 3.5 and shooting 25.4g fx pellets ,25.39g jsbs , and 26g hades

 

[trlrman]

Good evening. New to FX M3. I have a M3 700mm. .25 cal. Standard barrel. Shooting 26 gn JSB's and FX pellets.

Does anyone have a good tune?

I have 1st 150/2nd 95. I can't get the gun to shoot slower than 950. Do I need to raise the second reg? 

Thanks for any help.

Might try adjusting your valve down ?

 

[bmr4life]

Impact M3 Compact .22.

Got a pretty good tune I think. I shot over the Chrony in my shop at 20 yards and got one small hole (pellet on pellet pretty much). I still have to shoot at longer range to see how the accuracy holds at distance. The below is the information when shooting a full magazine of 28 rounds. I am also not sure how efficient it is. What is the best efficiency you see? I am getting 1.78 bar per shot with the 300 cc tank.

JSB 18.13gr

Average Speed: 943 fps

Extreme Spread: 9 fps

Standard Deviation: 2.43 fps

First Regulator: 150 Bar

Second Regulator: 110 Bar

Macro: 8

Micro: 3

Valve: 3 Lines fully exposed

Not a bad tune.

 

[5thumbs]

Valve calibration. I'm learning about the the M3 tuning. I noticed the that one full turn of the Valve knob moves from one line to the next (of the 4 lines). There are 6 spokes on the valve knob. I labeled them A-F starting with "A" when the valve knob is precisely on the 1st line of the stem. This has made it a bit easier for me to quickly record and return to previous settings. I had a hard time seeing the calibration lines. Maybe its something that would be helpful to you and make it easier to share tunes?

 

[kaylaindy]

Wow! Awesome idea!

If the whole knob had tiny hash marks like this gimbal...that's that we need. 

 

[Vetmx]

This is how you measure your valve setting. Then you write down the measurement.

The reason being is because .50mm can be the difference between an accurate slug and a not very accurate one. That tiny bit can’t be measured with an eyeball.

 

[bmr4life]

What does the valve adjustment control?

 

[Vetmx]

Valve lift. Dwell.

 

[bmr4life]

Valve lift. Dwell.

What impact does that have on my tune? Is that how hard or soft the air hits the pellet?

 

[Vetmx]

It controls the duration of the blast of air. That is a very nice feature to have when you have a complicated finicky barrel system. But if guys don’t understand these type of things, I don’t know why they would want to aggravate themselves with a complicated Impact. It is good for pellet and slug sales though.

 

[bmr4life]

It controls the duration of the blast of air. That is a very nice feature to have when you have a complicated finicky barrel system. But if guys don’t understand these type of things, I don’t know why they would want to aggravate themselves with a complicated Impact. It is good for pellet and slug sales though.

Yeah. I bought it for the macro and micro wheels and the customization options.

 

[icycrosshairs]

Empty reply to receive follow up emails for thread.

Will post when I have data to contribute 

 

[rc4fun]

@icycrosshairs If you go to the top of the page (any page) you can click the subscribe button and accomplish the same thing.

 

[icycrosshairs]

@icycrosshairs If you go to the top of the page (any page) you can click the subscribe button and accomplish the same thing.

Crap….  

Well then 

1# That’s a handy thing I didn’t notice until just now. 

#2 I feel like an absolute moron 



Thanks for the heads up man, good looking out. Probably just saved me a dozen empty comment posts…

 

[bmr4life]

Not a big deal. Most people learn about it the same way. Luckily most forums operate similarly. 

 

[smokeOnBro55]

M3 with 700 MM Smooth heavy liner (1:16) a Ernest Rowe carbon sleeve NOT glued , Huma dual TP and pin probe 

home cast MP Molds 217-35 RN Poured with 98% pure lead and 2% HSB 

1st reg 165, 2nd reg 145, Big Wheel 15, micro wheel 4.5, valve all the way out 



Shot count: 12
Low: 997
Hi: 1009
Avg: 1003
STD Dev: 4.2
Spread: 12.0

10/14/21 4:20:12 PM,1000
10/14/21 4:20:55 PM,1000
10/14/21 4:21:24 PM,1000
10/14/21 4:21:53 PM,997
10/14/21 4:22:16 PM,1000
10/14/21 4:22:45 PM,1009
10/14/21 4:23:20 PM,1009
10/14/21 4:24:12 PM,1002
10/14/21 4:25:07 PM,1000
10/14/21 4:25:44 PM,1000
10/14/21 4:26:09 PM,1009
10/14/21 4:26:36 PM,1007

dime size 50 yd groups with poor rest ( I was just quick testing a couple of changes) . 

will attempt a better bench set up Sunday 

 

[tfjensen]

Anybody have a good tune for the Javelin 26 grains (.217) slugs?

My M3 is with 600 mm barrel superior heavy liner with slug power kit? 

 

[Quagmire]

I got my M3 back from FX yesterday. The factory tune looks like this:

.25 cal 600mm barrel 25.4 JSB

Macro 16

Micro 3

Valve adjuster 4.2 lines

First reg 152

Main reg 100

Avg velocity 913 with an ES of 8 and a SD 2.52

I'm sure I'll have to make some tweaks to the tune as I continue to work with the gun. I'm waiting on my CF barrel sleeve and tuner to arrive.