FX Another M3 .22 slugger post

Your gun is good to go at 150b with what’s in it. After that you can add a washer. I just changed the spring when I was testing up there beyond 150b. I just always stuck with the stock probe except in my two guns that have L-techs on them. Make sure your gun has the probe set perfectly. Two out of the three new M3’s I purchased didn’t.
 
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Your gun is good to go at 150b with what’s in it. After that you can add a washer. I just changed the spring when I was testing up there beyond 150b. I just always stuck with the stock probe except in my two guns that have L-techs on them. Make sure your gun has the probe set perfectly. Two out of the three new M3’s I purchased didn’t.
Yeah I have been watching a lot of teardown videos already and the biggest take away was if unsure, measure and mark. It seems like a pretty straightforward gun to work on for the most part though. I can see why people really like them and I haven't even shot mine yet
 
Once you start shooting it, hopefully you won’t see why some people hate them. The gun can definitely be a hero for a day. Then the next day when you’re shooting, it’s not your friend anymore. But hopefully you’ll find a happy zone.
I shoot springers 99% of the time so I'm fairly accustomed to moody guns already 😆
 
Your gun is good to go at 150b with what’s in it. After that you can add a washer. I just changed the spring when I was testing up there beyond 150b. I just always stuck with the stock probe except in my two guns that have L-techs on them. Make sure your gun has the probe set perfectly. Two out of the three new M3’s I purchased didn’t.
Yeah I have been watching a lot of teardown videos already and the biggest take away was if unsure, measure and mark. It seems like a pretty straightforward gun to work on for the most part though. I can see why people really like them and I haven't even shot mine yet
I used the pin probe for a while when I had my mk2, but I did away with it after having accuracy issues and rather inconsistent shot strings. I then changed it to the huma pellet probe and I got about as much fps increase over the regulsr pellet from as I did with the pin probe but without seating issues and accuracy was better off that way. And I agree with @Vetmx about the slug kit. For me, getting the huma heavier weights worked, but only to a certain point. Beyond that it would waste too much air per shot unless you had your reg above 160bar
 
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I used the pin probe for a while when I had my mk2, but I did away with it after having accuracy issues and rather inconsistent shot strings. I then changed it to the huma pellet probe and I got about as much fps increase over the regulsr pellet from as I did with the pin probe but without seating issues and accuracy was better off that way. And I agree with @Vetmx about the slug kit. For me, getting the huma heavier weights worked, but only to a certain point. Beyond that it would waste too much air per shot unless you had your reg above 160bar
I suspect trying to throw the 40gr out of the 600mm barrel will probably have me running the second reg pretty hot. I'm definitely going to experiment with the probes some too. I wouldn't have expected that to matter so much but I'm glad you guys pointed it out. Thank you
 
I suspect trying to throw the 40gr out of the 600mm barrel will probably have me running the second reg pretty hot. I'm definitely going to experiment with the probes some too. I wouldn't have expected that to matter so much but I'm glad you guys pointed it out. Thank you
Personally, I wouldn't run the 40gr. Stick with 27.5gr - 34gr find which diameters works best for you. Make sure you clean your barrel as soon as you get it. If you decide to run a heavy liner, which you will need to shoot the 34gr+ slugs hot, I suggest polishing the liner. It will help with your liner not getting fouled as easily or quickly. I had a mk2 700mm with the power block, power plenum, shooting 30gr javelin slugs in 217 and 218 at 960fps with the reg sitting at about 142ish bar. No heavy hammer, no slug kit, no tensioned barrel. Just a heavy liner, huma probe, huma transfer port and hunterTACtical co magazines. If you go through some of my posts, you'lls see iguana kills beyond 150yds.
 
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Personally, I wouldn't run the 40gr. Stick with 27.5gr - 34gr find which diameters works best for you. Make sure you clean your barrel as soon as you get it. If you decide to run a heavy liner, which you will need to shoot the 34gr+ slugs hot, I suggest polishing the liner. It will help with your liner not getting fouled as easily or quickly. I had a mk2 700mm with the power block, power plenum, shooting 30gr javelin slugs in 217 and 218 at 960fps with the reg sitting at about 142ish bar. No heavy hammer, no slug kit, no tensioned barrel. Just a heavy liner, huma probe, huma transfer port and hunterTACtical co magazines. If you go through some of my posts, you'lls see iguana kills beyond 150yds.
Oh I definitely will be trying some lighter ones too but first my caveman brain needs to see if bigger is better ooga booga
 
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Oh I definitely will be trying some lighter ones too but first my caveman brain needs to see if bigger is better ooga booga
Well, just know that as @weevil stated, altaros makes some lighter 32gr slugs, and they still have a higher bc than anything else out there in the same weight class and heavier.
 
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I agree with JaceSpace. If you want to go 40gr, I would get a 700mm. I don’t think I ever heard of a guy that was shooting a 40 with a .22 trying to do it with a 600mm. You will be pounding on the gun way harder than necessary to do it. Here’s the problem that’s going to get you spun around and putting in way more work than necessary. It will also lead to frustration. The .22 600mm shooting a 27-30gr is a completely different gun than the one that’s a .22 trying to shoot 40gr. In order to keep the gun friendly, reliable and easy to tune, don’t shoot stuff that you need to hot rod the gun to do it. That’s one of the things probably top 5 on the list where Impact guys screw up. Let the gun do what it wants to do, don’t try to make it. Then at least you have a shot at having a gun that only might need minor tweaks the day you show up to compete. If you have a hot rod, you have a greater chance of pulling out a gun that just won’t shoot good the day of your competition.
 
I was just assuming the heavier hammer would work better at overcoming a higher reg pressure. I'm going to shoot it without it first and see what it does and then install it and see if there is any difference. Either way it is cheap in the grand scheme of things
It’s cheap but do you realize what you have to do to install anything hammer related? You have to disassemble some important stuff that you previously weren’t having issues with. You have to degas the entire gun then reassemble it and air it up properly so nothing is on a bind. My rule #1 with my Impacts is the less I have to tear them down, the better.
 
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It’s cheap but do you realize what you have to do to install anything hammer related? You have to disassemble some important stuff that you previously weren’t having issues with. You have to degas the entire gun then reassemble it and air it up properly so nothing is on a bind. My rule #1 with my Impacts is the less I have to tear them down, the better.
Weelllll I was going to get the 700mm or 800mm barrel but someone here told me to stick with the 600mm for now 😄 Thats on me though. I was planning to use to 40gr and assumed that's what everyone concidered heavy in this caliber. Lesson learned!

I've watched the teardown videos and honestly it really doesn't seem so bad. The gun looks to be pretty easy to work on for the most part. I understand the dont mess with something that isn't broke mentality though. In my 15yrs of working on cars/engines I've learned that lesson many, many times already.
 
A 30gr will head on out to 200m and hit what you’re aiming at if you can get your gun dialed in with it. Trust me. I’ve abused the bottom of a soda can with my .22 500mm slugger at 285 yards when me and the gun are getting along with each other. And I didn’t have to even shoot a 30gr to do it. Just have to not shoot square slugs. Meaning 17-20gr .22 slugs. I think your first goal is to focus in the 27-30gr area. See how it goes without adding in factors caused by you jacking with what FX intended on you shooting. Good luck.
 
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Hopefully someone will chime in with a couple more slugs and diameters.
I have had great results with NSA 27.5gr and NSA 28.5gr Slugs, both .218"...... my M3 700mm shoots patterns with .217" !! . Contrary to most here my best accuracy at longer distances is with velocity circa 1060fps ... .next node down is circa 990fps.

The NSA 27.5 and 28.5 are basically the ONLY slug i have had any luck with in MY M3 at extended distances !! AND.. i have tried pretty much all on the market with all sorts of velocity ranges ! Been a LONG journey.
 
I have had great results with NSA 27.5gr and NSA 28.5gr Slugs, both .218"...... my M3 700mm shoots patterns with .217" !! . Contrary to most here my best accuracy at longer distances is with velocity circa 1060fps ... .next node down is circa 990fps.

The NSA 27.5 and 28.5 are basically the ONLY slug i have had any luck with in MY M3 at extended distances !! AND.. i have tried pretty much all on the market with all sorts of velocity ranges ! Been a LONG journey.
How far?