FX Impact m3 .22 compact settings

[Floridaman2005]

Curious what others have their Impact .22 compact settings at. I’ve been up and down the scales looking for a good tune but I’m all spun around now.

I’ve heard having higher reg pressures is very beneficial for the compacts as you’ll get a shorter burst of air and less waste. I’m shooting 15.89g Hades pellets and haven’t really figured out the ideal speed for them. Curious what others are shooting and their regulator settings and power wheel settings. I’m thinking 150 first reg 110 second reg would probably be where I need to be.

 

[JaceSpace1369]

Curious what others have their Impact .22 compact settings at. I’ve been up and down the scales looking for a good tune but I’m all spun around now.

I’ve heard having higher reg pressures is very beneficial for the compacts as you’ll get a shorter burst of air and less waste. I’m shooting 15.89g Hades pellets and haven’t really figured out the ideal speed for them. Curious what others are shooting and their regulator settings and power wheel settings. I’m thinking 150 first reg 110 second reg would probably be where I need to be.

I removed the first reg from my m3, but I would think you'd have plenty of reg bringing the 1st reg down to 120b and 2nd reg to 80b, and still have a range of 860 to 920. Hades I've found like 800fps to 920fps barrel depending, in .22

 

[Floridaman2005]

I removed the first reg from my m3, but I would think you'd have plenty of reg bringing the 1st reg down to 120b and 2nd reg to 80b, and still have a range of 860 to 920. Hades I've found like 800fps to 920fps barrel depending, in .22

I’m wondering if my expectations are too high or if I just can’t find a tune that works properly…I keep finding my spreads opening up to 15-20 fps no matter what I do with regulator/valve/hammer combinations. And at 25 yards I’m expecting my shots to be hole in hole but they are not. I was measuring some of my groups from today and the better ones were about 1/4 inch at 25 yards which I guess is acceptable. I just find the gun being finicky and not as consistent as I had hoped for. I’ve tried a bunch of combinations but just can’t seem to get it fully dialed in. I suspect part of it is my abilities shooting from a bipod and supporting the gun with my rear hand, but it just seems like one will hit EXACTLY where I’m aiming and the next will be 1/4 inch off. Maybe that’s normal and I’m crazy. I want my spreads to be under 10 and SD under 2 but can’t seem to find it. I’m shooting at 910 currently but maybe I need to try slowing them down.

 

[JaceSpace1369]

You're expectations are not too high, it can be done. It's just a matter of taking your time with the tuning process. A good place to start 3.5 on hammer adjustment, 3.5 - 4 on the valve, and I always start the power wheel at 16, but you can have it at 8 as well for less hammer strike, mind you I always tune for slugs so that may make the difference on my set ups. Bring rear reg to 80b, front to 120b and work your way from there.

 

[Chukar60]

Whenever I see someone asking about tunes and they mention high velocity spreads my first inclination is to look at the hammer adjustments.
Set your first reg @ 160 bar, your second to around 100 bar. Then set the macro wheel in the middle range. Anywhere in the middle will do. Now set the micro roller just short of 5. Open the valve knob to 4.5 lines.
shoot and test for speed. go up 5 bar at a time until you are about 20-30 fps over your target speed.
say you want to shoot your pellets at 900. Raise the second reg until you are close to 925 fps. Then adjust the micro roller until you are at 905 fps. Once that is done go to the valve knob and adjust in with 1/4 turn adjustments until you are at 900 fps. You can fine tune from there for tighter groups.
Every time you adjust the reg, micro roller or valve knob make sure you shoot about ten shots to settle everything before making another adjustment.

 

[Floridaman2005]

Whenever I see someone asking about tunes and they mention high velocity spreads my first inclination is to look at the hammer adjustments.
Set your first reg @ 160 bar, your second to around 100 bar. Then set the macro wheel in the middle range. Anywhere in the middle will do. Now set the micro roller just short of 5. Open the valve knob to 4.5 lines.
shoot and test for speed. go up 5 bar at a time until you are about 20-30 fps over your target speed.
say you want to shoot your pellets at 900. Raise the second reg until you are close to 925 fps. Then adjust the micro roller until you are at 905 fps. Once that is done go to the valve knob and adjust in with 1/4 turn adjustments until you are at 900 fps. You can fine tune from there for tighter groups.
Every time you adjust the reg, micro roller or valve knob make sure you shoot about ten shots to settle everything before making another adjustment.

What makes this difficult is that I’m still searching for the best speed to shoot the 15.89g Hades at. My goal is pesting (iguanas) and I’m trying to determine the best speed to shoot at for accuracy so in order to figure out what speed to shoot at I have to do a lot of tweaking and testing before I can determine the most accurate speed. I don’t know what my target velocity should be. I don’t want to send them faster than I have to for the purpose of air conservation and efficiency.

Also it’s been mentioned that for 500mm compact barrels you benefit from higher reg 2 pressures as it will deliver a quicker shorter burst of air and will close the valve faster. At 25 yards I’m almost expecting one hole groups and if I’m not getting one hole groups i change velocities.

 

[Jay308]

This is the best YT explaining tuning to the knee, it helped me tune my Maverick to under 2/10 SD/ES.

 

[Chukar60]

What makes this difficult is that I’m still searching for the best speed to shoot the 15.89g Hades at. My goal is pesting (iguanas) and I’m trying to determine the best speed to shoot at for accuracy so in order to figure out what speed to shoot at I have to do a lot of tweaking and testing before I can determine the most accurate speed. I don’t know what my target velocity should be. I don’t want to send them faster than I have to for the purpose of air conservation and efficiency.

Also it’s been mentioned that for 500mm compact barrels you benefit from higher reg 2 pressures as it will deliver a quicker shorter burst of air and will close the valve faster. At 25 yards I’m almost expecting one hole groups and if I’m not getting one hole groups i change velocities.

I guess what your definition of “one hole group” is will determine your frustration level. If you are demanding that all your shots go into one pellet hole you will be tuning until you go crazy. Even at 25 yards. even with your gun tuned to it’s absolute best, variance in your trigger control, cheek weld, parallax adjustment, follow through etc will cause your group size with a perfect tune to be bigger than one pellet hole. One ragged hole is obtainable though
I have seen comments that higher plenum pressure is helpful with compacts. What I described to you is one way to arrive at shorter air bursts. With your hammer set as high as I indicated you are going to be very close to maximum fps for that plenum pressure. With every adjustment lower on the hammer setting you are making the air bursts shorter and that is why the velocities are dropping in the process and why you adjust the plenum to slightly more speed than you want. You are reducing the air burst with every click downward in the hammer spring tension.

 

[Floridaman2005]

I guess what your definition of “one hole group” is will determine your frustration level. If you are demanding that all your shots go into one pellet hole you will be tuning until you go crazy. Even at 25 yards. even with your gun tuned to it’s absolute best, variance in your trigger control, cheek weld, parallax adjustment, follow through etc will cause your group size with a perfect tune to be bigger than one pellet hole. One ragged hole is obtainable though
I have seen comments that higher plenum pressure is helpful with compacts. What I described to you is one way to arrive at shorter air bursts. With your hammer set as high as I indicated you are going to be very close to maximum fps for that plenum pressure. With every adjustment lower on the hammer setting you are making the air bursts shorter and that is why the velocities are dropping in the process and why you adjust the plenum to slightly more speed than you want. You are reducing the air burst with every click downward in the hammer spring tension.

Thank you, I appreciate the help and information and will give it another shot. I’ve tuned a few times in various settings and they have been pretty good, but it’s honestly probably me chasing perfection. I’ve tuned to ES under 7 or so and SD under 2 but was just chasing perfection (which I know is not possible, especially with a compact). I’m very happy with the gun and I tend to be a perfectionist. Most of the time I am getting one ragged hole but then I’ll get one that strays and get frustrated and feel like something is wrong and I need to make a change in some way. I’m pretty meticulous and my shooting setup is definitely not ideal and I don’t sort pellets or anything. I’m not trying to be a bench rest guy I’m just trying to get the gun as optimized as possible before trying to shoot an iguana or any critter. I very much want one shot kills.

 

[Jay308]

Thank you, I appreciate the help and information and will give it another shot. I’ve tuned a few times in various settings and they have been pretty good, but it’s honestly probably me chasing perfection. I’ve tuned to ES under 7 or so and SD under 2 but was just chasing perfection (which I know is not possible, especially with a compact). I’m very happy with the gun and I tend to be a perfectionist. Most of the time I am getting one ragged hole but then I’ll get one that strays and get frustrated and feel like something is wrong and I need to make a change in some way. I’m pretty meticulous and my shooting setup is definitely not ideal and I don’t sort pellets or anything. I’m not trying to be a bench rest guy I’m just trying to get the gun as optimized as possible before trying to shoot an iguana or any critter. I very much want one shot kills.

Time to sort your pellets because you are being a bench rest guy, trying to make only a pellet hole and no more. Also people exaggerate the accuracy of their high end pcp’s and you are trying obtain something that may be impossible. Just like all FX’s shoot every group at moa or less at 100 yards.

 

[Trucker3573]

What makes this difficult is that I’m still searching for the best speed to shoot the 15.89g Hades at. My goal is pesting (iguanas) and I’m trying to determine the best speed to shoot at for accuracy so in order to figure out what speed to shoot at I have to do a lot of tweaking and testing before I can determine the most accurate speed. I don’t know what my target velocity should be. I don’t want to send them faster than I have to for the purpose of air conservation and efficiency.

Also it’s been mentioned that for 500mm compact barrels you benefit from higher reg 2 pressures as it will deliver a quicker shorter burst of air and will close the valve faster. At 25 yards I’m almost expecting one hole groups and if I’m not getting one hole groups i change velocities.

Just my opinion here referring to your last paragraph. I disagree whole heartedly with that approach. In my experience running a higher reg pressure than required for the projectile and speed causes exactly what you are seeing, velocity fluctuations. Now that doesn’t mean accuracy will be negatively affected at closer ranges but maybe it will ? I’m just a stickler for tight ES. Being you are not seeing the accuracy you want try the other approach. People have already outlined great basics to tuning approach in this thread. Only thing I will say is I think you meantioned like a 115 or something reg pressure. In my opinion that’s way too high for hades. You will probably only need 85-90 bar. I would shoot for 880-900.

Edit…I’d go where @JaceSpace1369 Said…80 bar. Just read that.

 

[Floridaman2005]

Just my opinion here referring to your last paragraph. I disagree whole heartedly with that approach. In my experience running a higher reg pressure than required for the projectile and speed causes exactly what you are seeing, velocity fluctuations. Now that doesn’t mean accuracy will be negatively affected at closer ranges but maybe it will ? I’m just a stickler for tight ES. Being you are not seeing the accuracy you want try the other approach. People have already outlined great basics to tuning approach in this thread. Only thing I will say is I think you meantioned like a 115 or something reg pressure. In my opinion that’s way too high for hades. You will probably only need 85-90 bar. I would shoot for 880-900.

Edit…I’d go where @JaceSpace1369 Said…80 bar. Just read that.

Appreciate it. Where would you set reg 1 with reg 2 at 85-90?

 

[Floridaman2005]

Your expectations are not too high, it can be done. It's just a matter of taking your time with the tuning process. A good place to start 3.5 on hammer adjustment, 3.5 - 4 on the valve, and I always start the power wheel at 16, but you can have it at 8 as well for less hammer strike, mind you I always tune for slugs so that may make the difference on my set ups. Bring rear reg to 80b, front to 120b and work your way from there.

That sounds like a lot of hammer. I don’t think I’ve ever taken it that high on any of my tunes (which may be part of my problem?). At only 80 bar wouldn’t 3.5 on the hammer be overkill?

I will adjust my regs to 80/120 and see where that gets me thanks

 

[JaceSpace1369]

That sounds like a lot of hammer. I don’t think I’ve ever taken it that high on any of my tunes (which may be part of my problem?). At only 80 bar wouldn’t 3.5 on the hammer be overkill?

I will adjust my regs to 80/120 and see where that gets me thanks

You're welcome, and it could be, like it said I never tried with dual regs, but with 1 reg and 90b around 3.5 was enough maybe less, I can't exactly remember.

 

[Trucker3573]

Appreciate it. Where would you set reg 1 with reg 2 at 85-90?

That one isn’t super critical as long as you don’t get the two really close together. I’d set it to like 150 and never touch it.

 

[Floridaman2005]

You're welcome, and it could be, like it said I never tried with dual regs, but with 1 reg and 90b around 3.5 was enough maybe less, I can't exactly remember.

I’ll do some experimenting with it and get it right at the knee. I’ve got a good idea of what direction to go now appreciate the help

 

[Trucker3573]

What you will find on these big plenum guns trying to run a lower power tune with a quick valve cycle higher reg pressure is that not a big enough gulp of air will be used and the plenum won’t properly refill. Thus messing up shot consistency. Might work better with heavy slugs and pellets not hades for sure.

 

[JaceSpace1369]

I’ll do some experimenting with it and get it right at the knee. I’ve got a good idea of what direction to go now appreciate the help

You're welcome!

What you will find on these big plenum guns trying to run a lower power tune with a quick valve cycle higher reg pressure is that not a big enough gulp of air will be used and the plenum won’t properly refill. Thus messing up shot consistency. Might work better with heavy slugs and pellets not hades for sure.

It works just fine with the plenum as long as you're not going for a low power .22, like 20fpe or so. But hades at 900 would be just fine. @coastal drifter has his set up somewhat the same way.

 

[Floridaman2005]

Thank you @JaceSpace1369 and @Trucker3573 for getting me back on track. I retuned and took you guys advice and I am VERY satisfied with the results. I set regulators at 150/80 and immediately went out and shot a group and it was dead on. ES of 7 and SD of 1.3 and it was damn near shooting through the same hole for the entire string. The ONLY thing that changed for the worse was my shot count. It’s less efficient in its current tune VS. the previous tune, but the trade off for accuracy and consistency is well worth it. I suspect I need to raise the reg2 to 85-90 and dial the hammer back slightly so I’m not at the knee but just under it. I essentially am at peak velocity for the tune @ 890 fps but kind of don’t want to mess with it. Is it worth tinkering with the tune or should I leave it as is? I’m leaning to leave it as is because I really have no need to shoot over 100 shots per tank and I’m so satisfied with the results.

Thanks again and let me know what you guys think.

 

[JaceSpace1369]

Thank you @JaceSpace1369 and @Trucker3573 for getting me back on track. I retuned and took you guys advice and I am VERY satisfied with the results. I set regulators at 150/80 and immediately went out and shot a group and it was dead on. ES of 7 and SD of 1.3 and it was damn near shooting through the same hole for the entire string. The ONLY thing that changed for the worse was my shot count. It’s less efficient in its current tune VS. the previous tune, but the trade off for accuracy and consistency is well worth it. I suspect I need to raise the reg2 to 85-90 and dial the hammer back slightly so I’m not at the knee but just under it. I essentially am at peak velocity for the tune @ 890 fps but kind of don’t want to mess with it. Is it worth tinkering with the tune or should I leave it as is? I’m leaning to leave it as is because I really have no need to shoot over 100 shots per tank and I’m so satisfied with the results.

Thanks again and let me know what you guys think.

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Fantastic! and no, you need to decrease the pressure from reg 1 not 2. You should be getting nearly 170 shots with your gun shooting those number if you fill to 300b. The difference between both regs is too high, bring the first reg to around 120b and you should be good, emphasis on should. But it'll be around that +-10bar