Tuning What am I doing wrong? M3 .25

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spikex41

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Jul 2, 2021
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BC, Canada
Hey guys I’ve got the fx impact m3 in .25 I have the stx superior and the stx superior heavy liners and the slug power kit. When I first got the gun I played with the 26.8g NSA slugs and got them doing around .5 inch groups at 50 yards, ive since installed the slug power kit and heavy barrel, tried other slugs (NSA 26.8, 29, 29.5, 33.5, 33.6, 34.9, 38.5, ZAN 33, 35 and the fx hybrids) and not one Would do better then 1” groups at 50 yards trying all speeds from 880 FPS to 1000 FPS used about 3-4 boxes of each type trying to tune. So after spending almost 500$ on slugs now and not finding anything that shoots close to as good as my daystate huntsman regal will shoot slugs with it’s short pellet barrel. I’ve decided to try go back to the pellet barrel and removed the slug power kit to get the 26.8g nsa back to the 1/2” groups. But now with all the same settings I’m shooting at about 1080 fps where as before was only 910 FPS. So I tried to tune it back to factory settings and shoot the pellets and there shooting at 890 FPS on 3, 2.75, 4 bars showing, and reg at 90 bar. But now when I turn my power adjustment wheel it doesn’t change the FPS till I get down to around 3-4 then I get a bit of movement. At 1 it’s shooting at 850 FPS so I really don’t have a lot of range to play with it and I have no idea why. So I tried to go back to the 26g slugs and couldn’t get better then 2” at 50 yards I tried all 16 power wheel settings at 100 bar on reg, then 105 bar, 110 bar, 115 bar. All of them about the same 2” groups. I have no idea anymore what to do. I’m almost ready to sell the impact and just keep using my daystate huntsman, it’s not tuneable really but I get Way better accuracy out of it than the fx impact could dream of so far. 

the more I watch tuning videos online the more I realize no one explains how to set the reg. They all say we already know I need more reg pressure so I’ll put it to 150 or they say well I already know I need 135 bar so we’ll set it there. But no one says how the hell you know you need higher or lower? I crank mine up and the speed stays the same or it will drop. And my power wheel adjustments don’t do anything unless your on the lower 3-4 numbers. Maybe my gun is broken? Should I pack it up and return it? Also people say to listen to the valves, I live in Canada you can’t use a silencer here so the gun is louder then a .22 LR I can’t hear anything so I have no idea wtf there talking about. Maybe the fx impact is just a garbage gun without a suppressor? Is it made to shoot with one and can’t handle not having one bc of the vibrations?

Anyways if anyone has a step by step guide on how to tune the gun that would help a lot. Mainly how to tune the regulators in detail not just saying you need more pressure. But why and what are the signs or conclusions to that decision? I Currently feel like the fx impact is just a money pit and considering selling it and sticking to the daystate huntsman. At least then I can count on hitting something when I go hunting bc right now I don’t trust it enough to hunt with it. 
 
Hi Spike,

Please contact one of our technicians for tuning help if you are still running into difficulties. We want to be there for our customers especially in any trouble shooting or assistance in getting your gun running optimally. 

Regards, 

FX Airguns USA

Monday – Thursday 9 AM – 4 PM EST
Fridays 9 AM – 3 PM EST
Phone: +1 866 639 0772
[email protected]



Here are some of our Master Class videos by Ernest Rowe on high power tuning and M3 running guide. 

https://youtu.be/c3VqFPWJ1F8


https://youtu.be/a7F_-FTwx0o


 
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Hey guys I’ve got the fx impact m3 in .25 I have the stx superior and the stx superior heavy liners and the slug power kit. When I first got the gun I played with the 26.8g NSA slugs and got them doing around .5 inch groups at 50 yards, ive since installed the slug power kit and heavy barrel, tried other slugs (NSA 26.8, 29, 29.5, 33.5, 33.6, 34.9, 38.5, ZAN 33, 35 and the fx hybrids) and not one Would do better then 1” groups at 50 yards trying all speeds from 880 FPS to 1000 FPS used about 3-4 boxes of each type trying to tune. So after spending almost 500$ on slugs now and not finding anything that shoots close to as good as my daystate huntsman regal will shoot slugs with it’s short pellet barrel. I’ve decided to try go back to the pellet barrel and removed the slug power kit to get the 26.8g nsa back to the 1/2” groups. But now with all the same settings I’m shooting at about 1080 fps where as before was only 910 FPS. So I tried to tune it back to factory settings and shoot the pellets and there shooting at 890 FPS on 3, 2.75, 4 bars showing, and reg at 90 bar. But now when I turn my power adjustment wheel it doesn’t change the FPS till I get down to around 3-4 then I get a bit of movement. At 1 it’s shooting at 850 FPS so I really don’t have a lot of range to play with it and I have no idea why. So I tried to go back to the 26g slugs and couldn’t get better then 2” at 50 yards I tried all 16 power wheel settings at 100 bar on reg, then 105 bar, 110 bar, 115 bar. All of them about the same 2” groups. I have no idea anymore what to do. I’m almost ready to sell the impact and just keep using my daystate huntsman, it’s not tuneable really but I get Way better accuracy out of it than the fx impact could dream of so far. 

the more I watch tuning videos online the more I realize no one explains how to set the reg. They all say we already know I need more reg pressure so I’ll put it to 150 or they say well I already know I need 135 bar so we’ll set it there. But no one says how the hell you know you need higher or lower? I crank mine up and the speed stays the same or it will drop. And my power wheel adjustments don’t do anything unless your on the lower 3-4 numbers. Maybe my gun is broken? Should I pack it up and return it? Also people say to listen to the valves, I live in Canada you can’t use a silencer here so the gun is louder then a .22 LR I can’t hear anything so I have no idea wtf there talking about. Maybe the fx impact is just a garbage gun without a suppressor? Is it made to shoot with one and can’t handle not having one bc of the vibrations?

Anyways if anyone has a step by step guide on how to tune the gun that would help a lot. Mainly how to tune the regulators in detail not just saying you need more pressure. But why and what are the signs or conclusions to that decision? I Currently feel like the fx impact is just a money pit and considering selling it and sticking to the daystate huntsman. At least then I can count on hitting something when I go hunting bc right now I don’t trust it enough to hunt with it.
Click to expand...

Have you read the instructions in the link that follows?

https://www.airgunnation.com/topic/how-to-do-a-basic-regulated-pcp-tune-the-95-tune-plus-m3-tuning-simplified/#post-1242157

I really hope you don't give up on the FX Impact out of frustration. The Daystate Regal/Revere is a very fine air rifle. The styling, the ergonomics and the accuracy are stellar. I currently own two, a .177 caliber Huntsman Regal and a .22 caliber Revere. I will never part with either of them. 

However, the FX Impact is light years ahead of the Regal based on modularity, tunability, shot count and magazine capacity, just to list a few features where the Impact shines.

Give the Impact a shot. Be patient and familiarize yourself with the rifle and you will be rewarded with a state-of-the-art air rifle.
 
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Hi Spike,

Please contact one of our technicians for tuning help if you are still running into difficulties. We want to be there for our customers especially in any trouble shooting or assistance in getting your gun running optimally. 

Regards, 

FX Airguns USA

Monday – Thursday 9 AM – 4 PM EST
Fridays 9 AM – 3 PM EST
Phone: +1 866 639 0772
[email protected]



Here are some of our Master Class videos by Ernest Rowe on high power tuning and M3 running guide. 



https://youtu.be/c3VqFPWJ1F8






https://youtu.be/a7F_-FTwx0o



Click to expand...

I have reached out to yous before and all I got was what the factory settings should be and told not to go over 90-95 bar, but EVERYONE else said I was too low on pressure so I don’t know what to believe. All the YouTube videos people are at like 135-170 bar for the heavy slugs but I’m getting faster speeds then what I want at like 100 bar or 110 bar on the 26.8g. Also these videos don’t explain how to adjust the regs they just already know what to set them at and don’t explain what will happen if your off. Also they say the target speed there aiming for but don’t say how they came to that conclusion. Like how do you know something shoots good at 880 or 980 FPS if you just bought it and haven’t tested anything yet? Like my 26.8g slugs did .5” groups at 910 FPS why does everyone say to aim for high 900s for slugs? I was like 2-3” groups going that fast and good .5s going slow. Not anymore now it’s just all bad and can’t seem to fix it. If No one on here can help me I’ll try message one of your guys again but I have a feeling I’ll end up sending it to someone to get fixed or just selling it if it’s gonna cost too much more to tune it/fix it. 
 
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Hey guys I’ve got the fx impact m3 in .25 I have the stx superior and the stx superior heavy liners and the slug power kit. When I first got the gun I played with the 26.8g NSA slugs and got them doing around .5 inch groups at 50 yards, ive since installed the slug power kit and heavy barrel, tried other slugs (NSA 26.8, 29, 29.5, 33.5, 33.6, 34.9, 38.5, ZAN 33, 35 and the fx hybrids) and not one Would do better then 1” groups at 50 yards trying all speeds from 880 FPS to 1000 FPS used about 3-4 boxes of each type trying to tune. So after spending almost 500$ on slugs now and not finding anything that shoots close to as good as my daystate huntsman regal will shoot slugs with it’s short pellet barrel. I’ve decided to try go back to the pellet barrel and removed the slug power kit to get the 26.8g nsa back to the 1/2” groups. But now with all the same settings I’m shooting at about 1080 fps where as before was only 910 FPS. So I tried to tune it back to factory settings and shoot the pellets and there shooting at 890 FPS on 3, 2.75, 4 bars showing, and reg at 90 bar. But now when I turn my power adjustment wheel it doesn’t change the FPS till I get down to around 3-4 then I get a bit of movement. At 1 it’s shooting at 850 FPS so I really don’t have a lot of range to play with it and I have no idea why. So I tried to go back to the 26g slugs and couldn’t get better then 2” at 50 yards I tried all 16 power wheel settings at 100 bar on reg, then 105 bar, 110 bar, 115 bar. All of them about the same 2” groups. I have no idea anymore what to do. I’m almost ready to sell the impact and just keep using my daystate huntsman, it’s not tuneable really but I get Way better accuracy out of it than the fx impact could dream of so far. 

the more I watch tuning videos online the more I realize no one explains how to set the reg. They all say we already know I need more reg pressure so I’ll put it to 150 or they say well I already know I need 135 bar so we’ll set it there. But no one says how the hell you know you need higher or lower? I crank mine up and the speed stays the same or it will drop. And my power wheel adjustments don’t do anything unless your on the lower 3-4 numbers. Maybe my gun is broken? Should I pack it up and return it? Also people say to listen to the valves, I live in Canada you can’t use a silencer here so the gun is louder then a .22 LR I can’t hear anything so I have no idea wtf there talking about. Maybe the fx impact is just a garbage gun without a suppressor? Is it made to shoot with one and can’t handle not having one bc of the vibrations?

Anyways if anyone has a step by step guide on how to tune the gun that would help a lot. Mainly how to tune the regulators in detail not just saying you need more pressure. But why and what are the signs or conclusions to that decision? I Currently feel like the fx impact is just a money pit and considering selling it and sticking to the daystate huntsman. At least then I can count on hitting something when I go hunting bc right now I don’t trust it enough to hunt with it.
Click to expand...

Have you read the instructions in the link that follows?

https://www.airgunnation.com/topic/how-to-do-a-basic-regulated-pcp-tune-the-95-tune-plus-m3-tuning-simplified/#post-1242157

I really hope you don't give up on the FX Impact out of frustration. The Daystate Regal/Revere is a very fine air rifle. The styling, the ergonomics and the accuracy are stellar. I currently own two, a .177 caliber Huntsman Regal and a .22 caliber Revere. I will never part with either of them. 

However, the FX Impact is light years ahead of the Regal based on modularity, tunability, shot count and magazine capacity, just to list a few features where the Impact shines.

Give the Impact a shot. Be patient and familiarize yourself with the rifle and you will be rewarded with a state-of-the-art air rifle.
Click to expand...

Yes I’ve read that thread and I’ve tried to get within 95% of max but when I open everything up and increase reg pressure to the max I want I go to the hammer wheel and each click doesn’t change anything, same as the micro wheel doesn’t do anything. Only thing that changes speeds is the valve return spring. With pellets I can still get 900 FPS with like 60 bar on the reg so not sure why they say 90-95 bar in the manual when it works sooo much lower.
btw I love my huntsman as well, I would trade in my impact for another daystate in a heartbeat right now, it’s shot good from day 1 and still shoots smaller groups at 100 yards then my impact does at 50 yards. 
 
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Sounds like you have the valve return adjuster in to far try opening it up all the way it will open like a turn and half past the last line on it sounds like to me it's slamming the valve back shut open it all the way when tring to tune for a certain speed then use that to fine tune the speed the FX and all the air guns are loud when you get above certain speeds without a moderater and moderator can affect accuracy but it can be good or bad it just depends on the moderator if you open every thing up and doesn't change with micro or macro at higher reg pressure you may need a heavier hammer
 
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Assuming you took everything out of the gun from the slug kit and I mean everything, if you set your second reg, micro, macro and valve back to exactly what they were, you definitely shouldn’t be 170fps faster. Now if you’re setting your valve with your eyeball, that’s a problem. Second problem is with the slug kit you beat the piss out of the two rubber balls in the valve knob. There are some unspoken harsh realities of an Impact. Once you face them and know how to accept or work around them, life with the gun is much better. 
 
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Are you certain you removed and replaced all the slug power kit parts with the original parts? It sounds like you are overpowering the valve with those velocities at such low hammer settings. My guess would be you still have the light valve return spring installed.

In addition to that the second reg pressure in the plenum is part of what adds resistance to opening the valve and also helps close it. That's why when raising reg pressure you should reach a point where the speed drops, requiring more hammer spring tension to further increase speed.

The lack of steppable speeds with the power wheel, and the high speeds you're getting at such low settings makes me think something in the hammer/valve train ain't right.
 
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Are you certain you removed and replaced all the slug power kit parts with the original parts? It sounds like you are overpowering the valve with those velocities at such low hammer settings. My guess would be you still have the light valve return spring installed.

In addition to that the second reg pressure in the plenum is part of what adds resistance to opening the valve and also helps close it. That's why when raising reg pressure you should reach a point where the speed drops, requiring more hammer spring tension to further increase speed.

The lack of steppable speeds with the power wheel, and the high speeds you're getting at such low settings makes me think something in the hammer/valve train ain't right.
Click to expand...



I looked again and yea all the parts from the kit are out Except I left the slug probe in not thinking it has anything to do with the power really. my front valve was at 5.5 bars open to start and has the stronger spring in it, it didn’t have any affect until screwed in to about 4 bar line, then started to drop my FPS, but then the power wheel and micro wheel doesn’t do anything. Maybe I really do need 150 bar on the reg for a 26 grain slug? But the 25grain pellets were shooting over 900 FPS before on 90 bar so I dunno. 
 
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I looked again and yea all the parts from the kit are out Except I left the slug probe in not thinking it has anything to do with the power really. my front valve was at 5.5 bars open to start and has the stronger spring in it, it didn’t have any affect until screwed in to about 4 bar line, then started to drop my FPS, but then the power wheel and micro wheel doesn’t do anything. Maybe I really do need 150 bar on the reg for a 26 grain slug? But the 25grain pellets were shooting over 900 FPS before on 90 bar so I dunno.
Click to expand...

Ok here's what I would do...

Reset the hammer settings to their circled midrange numbers, power wheel on 8, micro on 3. Put the valve adjuster about 1 turn past the 4th line. Leave everything set there.

Start with the second reg at 100bar and shoot a couple shots over the chrony. Now without changing any of the other settings start raising the reg pressure 5 or 10 bar at a time and when the speed stops increasing or goes down, then raise the power wheel a click or two to see if speed goes up. It should, but it also should stop going up a few clicks before you reach 16.

Continue incrementally raising reg pressure until you get a speed increase with each step of the power wheel. At that point set the power wheel to a speed a little faster (20-50fps) than you want and begin closing the valve knob a quarter turn at a time till it brings you down to the speed you want.

The lack of speed increase you're getting from the power wheel suggests that the valve dwell is way too long and you're probably dumping a ton of air out the barrel behind the pellet/slug, which would also explain the lack of accuracy. When the valve dwell is correct the gun should be noticeably quieter. I never shoot without a moderator so I'm kinda guessing at that part.

If that doesn't get you in the ballpark I don't know what to tell you. Something may be faulty in the gun and it needs to be looked at by an 'expert'.
 
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I looked again and yea all the parts from the kit are out Except I left the slug probe in not thinking it has anything to do with the power really. my front valve was at 5.5 bars open to start and has the stronger spring in it, it didn’t have any affect until screwed in to about 4 bar line, then started to drop my FPS, but then the power wheel and micro wheel doesn’t do anything. Maybe I really do need 150 bar on the reg for a 26 grain slug? But the 25grain pellets were shooting over 900 FPS before on 90 bar so I dunno.
Click to expand...

Ok here's what I would do...

Reset the hammer settings to their circled midrange numbers, power wheel on 8, micro on 3. Put the valve adjuster about 1 turn past the 4th line. Leave everything set there.

Start with the second reg at 100bar and shoot a couple shots over the chrony. Now without changing any of the other settings start raising the reg pressure 5 or 10 bar at a time and when the speed stops increasing or goes down, then raise the power wheel a click or two to see if speed goes up. It should, but it also should stop going up a few clicks before you reach 16.

Continue incrementally raising reg pressure until you get a speed increase with each step of the power wheel. At that point set the power wheel to a speed a little faster (20-50fps) than you want and begin closing the valve knob a quarter turn at a time till it brings you down to the speed you want.

The lack of speed increase you're getting from the power wheel suggests that the valve dwell is way too long and you're probably dumping a ton of air out the barrel behind the pellet/slug, which would also explain the lack of accuracy. When the valve dwell is correct the gun should be noticeably quieter. I never shoot without a moderator so I'm kinda guessing at that part.

If that doesn't get you in the ballpark I don't know what to tell you. Something may be faulty in the gun and it needs to be looked at by an 'expert'.
Click to expand...

Ok I’ll give that a try! So far every time I try tune everyone says start with their power wheel and adjuster knob at max with valve wide open, then was increasing reg pressure to get a little faster Then try tune it down but I really had next to no changes trying to go down till on the last few clicks. Hopefully this works out it makes sense. I’ll try get out to the range today and test it out. Thx 
 
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Ok I’ll give that a try! So far every time I try tune everyone says start with their power wheel and adjuster knob at max with valve wide open, then was increasing reg pressure to get a little faster Then try tune it down but I really had next to no changes trying to go down till on the last few clicks. Hopefully this works out it makes sense. I’ll try get out to the range today and test it out. Thx
Click to expand...

Yes, I know. Even Ernest Rowe says tune from the max hammer settings. I prefer to start in the midrange and go up from there. I think it's better for the gun if you can achieve your desired tune at something less than maxed out settings.

Look it's entirely possible using my method that powerwheel 16 might not be enough and you may need to add some micro hammer tension and/or a bit more reg pressure. I will predict that you will likely end up at 14, 15, or 16 on the powerwheel and somewhere around 140bar, give or take, on the reg.

Good luck.
 
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I also prefer to start lower on hammer tension and increase as needed. I never understood why anyone would recommend maxing out hammer tension to tune your gun. It opens up the door to cause internal damage.

Spike - I’m not a subscriber of the slug power kit. If the pellet probe is aligned correctly you won’t see much, if any, difference in fps. Even Ted commented on this in one of his videos, and I confirmed with my own experiments. Disclaimer - I haven’t worked with RP’s above 140 bar.

I’m currently shooting 34.9 gr NSA’s out of my .25 Impact M3 at 960 fps using the pellet probe. PW at 10 and micro adjuster a little over 3 (i think 3.5). Reg2=136 bars. This is not even maxed out for the RP. Running it about 97%.

I hope your able to get your gun back in good order. Don’t listen to the SA guys for tuning advice, especially for NB’s. Their guns are are usually heavily modified and running at the bleeding edge with ultra-poor shot count. They do give away some nuggets once in a while but don’t take anything for gospel. We have no idea what they did to their guns because they are constantly beta testing new parts for FX.

My advice is to learn the basics first of proper tuning so the gun is in harmony (hammer tension and reg pressure are all working together in balance). Then you can start introducing novel concepts for experimentation.

Feel free to PM me if you want to discuss further.

John
 
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I tune in the middle too, no matter what the "pros" say. If I can get the velocity I want in the middle of the power wheel setting with a standard weight pellet for caliber, if I go to a heavier pellet or FX Hybrid or light slug even, sometimes I can go between multiple projectiles just using the power wheel. I prefer that flexibility to the absolute best tune for a specific projectile to the exclusion of all others without going through the tuning process all over again.
 
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I leave my wheel on #16 when I start a tune at a certain reg setting. I work my speed up with the micro M3 or hammer screw MKll until I hit my max speed for that reg setting. Only then do I use the wheel to back the speed down to where the gun starts to balance out. My reasoning is I always want #16 to be the max speed for that reg setting. That speed is in my notes for reference should I have a problem or do a modification. It’s also right where I go after I disassemble the gun. If I decide one day to up my reg pressure, I put the gun on 16 and that’s where I start before I once again find my max with my micro or screw. Max or 16 depending on the gun is always as fast as my gun will shoot. I also don’t believe in beating the hell out of the valve by setting everything on Max and working your way up using the reg pressure. No wonder guys are confused and get their guns all jacked up.
 
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Unfortunately I didn’t get out today got called into work, next day off I have I’m gonna go try it out. I really hope it works if not FX Technicians said send it on in so I’ll do that and surely after that it’ll work. But when I go out I’ll spend a day trying, I've got 3 boxes of ammo left so hopefully that’s enough to do all the testing and tuning to get it shooting good. But yea I gotta stop watching YouTube videos on tuning advice they all say to start with everything maxed out and go down and that wasn’t working for me for some reason. I’ll try start from the middle or lower end and work my way up instead, I really hope this works out so I don’t have to send my gun back lol.
 
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It really sounds like you left the hammer spring spacers/weights in. That's the only part of the slug kit that makes a big difference and it is BIG. A stock M3 (no spacers) you should be shooting pellets at 900fps around 95 bar not 60 bar. This would explain having too MUCH power and not getting much change from hammer spring settings until you go really low. This is a good problem to have. If it were the opposite and you had too LITTLE power after the changes, you would be hunting for something that was broken or not working right, and thankfully that doesn't seem to be the case.

Let's talk about the Macro wheel a little. I didn't go into detail in the simple tuning thread because I wanted to keep it dead simple. The macro wheel only jumps the micro adjuster in large increments. Where the micro adjuster indicator is pointing at any time is how much hammer spring tension you have. Example: Macro 16 - Micro 4 is the same as Macro 10 - Micro 4. Play with the two a little and you'll see what I mean. The Macro wheel is useful in that it lets you quickly jump to alternate hammer spring settings AFTER you have set your primary tune. The most common use for the Macro wheel is to set it to 16 (max) when doing your hottest tune, like slugs. Then you can use it to quickly lower hammer spring in large chunks to achieve lower speeds for other uses. For me, its slugs at 960fps on 16, pellets at 890fps on 11, and pellets at 650fps on 1. Each of those Macro settings corresponds to a specific value on the micro adjuster. You could achieve the exact same thing by winding the micro adjuster down, but it would take a long time and you'd have to squint looking for the hash marks. Vetmx has a different use where he wants to be able to quickly see max fps, so when he lowers hammer spring as the last step of tuning, he does it via the macro wheel instead of the micro adjuster. This lets him quickly jump UP to the reference max fps.

You are way ahead of the curve since you have a known good slug/barrel combo. 1 MOA with slugs is really good and you are unlikely going to do much better than that. All you have to do is to tune for those 26gr slugs again. 

Once you get the power disparity figured out and go back at tuning, I recommend setting the valve full out per the manual, and reg at about 100 bar, since this should be under what is needed to push your 26gr slugs in the 900s. You are looking for a max velocity that is ~105% of your target velocity (a 95% tune). Longform it goes like this: start with reg at 100bar, increase hammer spring via micro adjuster until velocity tops out. Stop. That's your max fps for 100bar reg pressure. Still not high enough? Increase reg by 5 bar and increase hammer spring via micro adjuster until it tops out. Stop. Repeat as needed. When you find the reg pressure that has the correct max fps, you'll then need to back off hammer spring tension until you are at 95% of max. You can do that with the micro adjuster or macro wheel like vetmx does.

If you don't know what a good fps is for your slugs/barrel combo, you may have to try 95% tunes at a few different reg pressures. Good news is that if you have a good slug/barrel combo it will probably shoot decent across a range of speeds. I think you said you were shooting them at 910 fps, so that sounds like a good place to start.

Making sure you are tuned at or less than 95% is going to be even more important since you lack a supressor. In fact I'd experiment and see if I could get good accuracy at lower %, which will result in a more quiet tune. When you say it is as loud as a 22lr, that tells me you are almost surely running well above 95%. 
 
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TDK thank you, this info is going to help me a lot, I can really grasp what your explaining and I think I have my head wrapped around it a bit better. I really didn’t realize this part that you explained:

TDK : “Where the micro adjuster indicator is pointing at any time is how much hammer spring tension you have. Example: Macro 16 – Micro 4 is the same as Macro 10 – Micro 4. Play with the two a little and you'll see what I mean” 

I feel like this is going to save me a lot of money in ammo tuning as well. I also have a digital sagmhet gauge in the mail should be here tonight, I wasn’t sure if maybe my gauge isn’t working on my reg after a few people said I shouldn’t be getting 900 fps on 60 bar so I ordered a digital to check with better accuracy. I can confirm that the slug power kit is all removed Except the slug probe but I can change that out too if it’ll make a difference.

now I just need time off work to get out and test it. Thx for the time to write all that up TDK, I appreciate it.
 
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Ok so I managed to get out for 30 min before it started to rain. I swapped out my 2nd reg gauge with the Digital that just came in, my pressure was 115 when showing 100 before so it was out a bit. Today I started at 100 bar and was shooting at like 980 fps on micro 7, macro 6, and valve open to 5.5 line. So I turned it down to 95 and got between 888 and 930 fps on macro 2, micro 2.7, and valve at 5 line. It was doing about 1.5” groups at 50. My spread was like 45 and std dev was around 16. I loaded up some 33.95 jsb pellets that I just got today and they were shooting 850 one hole at 50 yards, about .5” hole for 10 shots but still about a 40 fps spread. So if I can get this tuned in for better std dev I feel like the slug accuracy will be good. And it’s even a really good speed for the 33.95s so will hopefully work as a double tune. 


Thanks again for the advice and help guys. Really starting to make sense of this. Gotta quit listening to people always saying crank up the regs, turns out lower reg was needed not higher. Next I need to do some research on how to fix the std dev without messing up my speeds too much but I think I’ll have the weekend off so I’ll spend a couple days tinkering around. 
 
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