FIX FX Impact M3 Spread Issues - Thoughts, Tests and Facts 

Thank you, the tuning part was very informative!!☺️

Did some problems with spread at 910 fps, turned up pressure to 110 bars and its much better thanks for some great information

Great Video! Thank you very much for sharing.

Very informative, thanks for a great video

Great informative video, thank you

Very well done I'm learning to tune shooting slugs ,power wheel at 16 got 945 fps then went to micro till speed dropped then went back 2 clicks, then valve ended a 7 shot string 1st 938 next 6shots where 942 that is my sweet spot for slugs from my fx thanks very informative video and done the way I was taught. Shooting 25cal 700 barrel h&n 34gr

I agree with you I had the same problem with both of my fx impact mk2 25 cal 700mm and fx impact m3 22 cal 700mm but now both are shooting awesome thanks for sharing your info be safe and shoot straight buddy 👍

Thank you man so much man I switched from pallets to slugs and I changed the transfer port to the dual transfer port I was getting inconsistent shot spread was big 76 !! I watched your video I went back to the single port I did some tuning no I'm sending h&n 23 grain 970fps with 5 shot string 1 inch group at 100 yard

Thanks again for another great video. I have a M3 177 with the 600mm. I've used the valve to gain speed but never tuned with it. Thanks for explaining tuning with the valve will definitely give it a go! Over a year ago SPAW here in the US started taking preorders on the 177 Superior Heavy Slug liners. I preordered one immediately. Short story, still waiting!!! I hope FX releases it soon before I decided to move onto a different platform. I didn't buy the M3 to shoot pellets as I have many other guns that do that well. FX, we need the 177 slug liner already!!!

Gran trabajo amigo y muy buen video a resultado muy útil para entender las velocidades a las que uno desea tirar

I did a 10 shot string with my RTI prophet compact in. 177 with H&N baracuda match and had 9 out of 10 @900 feet and the last one was 898 feet I have never seen it befor and don't think I will again. Mad too see you doing the same over 1000 feet

Brilliant video Peter ! I have a 177 FAC Mk 2 with 700mm barrel and using NSA 15 gr I get a spread between 919 to 946. I have the regulator around 100 bar, to keep the vigor down. Funny thing is that I get a few shots around 919, then a few around 946, then a few back down to 919 etc. Just fitted the Power Block and turned the regulator up to 108 bar and after adjusting the knob between the barrel & air cylinder to show about 3.5 rings - I'm getting good consistency around 956 ie +/- 4 fps. I'm settling for this based upon the size of the spreads before. Having said that - I'm sure I'll push for higher fps at some point . Next job is to try and get acceptable groups using the harmonic tuner on the tensioned barrel. Find your videos very inspiring to keep exploring different setups & options.

I agree with your statement at the end of the video. 👍

Glad to see you back . We all need a break sometime to regroup . I continue to be faithful to the .177 for a number of reasons . Shot count being one of them . but for back yard target and small varmint dispatch it’s all you need and it’s quieter . It is more critical for the .177 with lighter pellets and slugs to keep you spread as close to zero as possible for accuracy. One think we don’t talk about very much . the amount of wear and tear the o-rings , regulators and hammer valve assembly take to get big bore PCP’s to shoot the high velocities needed to send larger & heavier pellets or slugs down range . If you want reliability , the .177 is better . I do worry for you though , once you get to that pentacle you may run out of things to do . 😂

I revisited this post to give you a tip on improving the trigger feel on any FX Impact if you haven’t done it already . If you ever remove the C1 to access the hammer & spring assembly , do this before putting everything back together . By chucking the hammer and spring (housing )with a hand drill polish the face with a fine compound to a mirror finish ! This is the side the trigger assembly spring & hammer locks onto when you cock the gun . You will find it eliminates trigger creep and works smoother .

Great video. I just purchased the M3 .22 caliber Sniper 700 mm barrel with heavy slug liner. Shooting JSB Knockouts 25.39 grain slugs. I have not found the accuracy I am looking for at 100 yards. I have also tried various other brands and weights from 23 g. to 30g. Shoots sub MOA at 50 yards, but 2.5 MOA average at 100 yards. Shooting 950 fps with a spread of around 6 fps. I have tried 950, 960, 970, 980, 990 FPS but no improvement in accuracy. I shoot my Daystate rifles at 1 MOA or less at 100 yards - 22 caliber using JSB pellets and slugs both 25.39 g. I use FX Impact 44 g slugs and JSB 50.1g pellets in 30 caliber. I will try your tuning tips and keep playing with the velocities. Thanks for taking the time to not only walk through your experiences, but to show the data in clear and simple summaries. Very well done.

Hi Viking I know this was filmed a year ago and I did watch it back then as I was looking for answers for my own M3 in .25cal. I had the exact same problem with FPS spreading vastly and grouping like a shot gun fired at a target. I purchased my rifle brand new in January 2023 and had to send it back 2 months later after trying several attempts to try and put it right myself. Unfortunately, the distributor/airsmith for the FX range in the UK are useless. They kept my rifle for 27 weeks and when I finally got it back it was hit and miss. They claimed that they had replaced both the heavy slug liner and the standard one but I think they were lying because when I took the barrel apart to fit a carbon sleeve in the standard one, it only had two O'rings instead of three and one of them was completely broken. Ideally I would have preferred a full refund but I persisted with hope that I can get it shooting the way it should. Anyway, here I am again going over your video again from a year ago trying to find answers for a fix to my problem. Wish you were in the UK. Any ideas?

My understanding of the M3 system is that if you gave someone else your settings, both regs, power wheel , quick tune and front valve they should get pretty much exactly the same speeds with same slugs/pellets. Probably why people ask you, but they require all settings. Nice video.

Thanks for sharing Bro, nice 😎🤙

To also add... very interesting interesting! 😁

Great video, Thanks! What sort of tent do you use in this video?

Pls do give the h&N 20grn slugs a try.. it may surprise you with its accuracy..

I agree. FX needs to get their shit together. To me, it's absurd to buy a gun for $2,000+ that doesn't perform optimally out of the box.

Hi, thanks for a very detailed and explanatory video. I live in the states and I have the superior heavy liner which is the Slug liner? Are you saying you don't have access to this liner or we need a better slug liner? Thanks again!

hi Great video to address the issues for .177, i have a one question 1. At what pressure is 2nd regulator ? and is the hammer stock one 2. An another issue being faced is the first 2 shot being lower than the remaining (post changing the mag) , have you also encountered any similiar situation? would appreciate your thoughts pls

I wrenched a little on my maverick a few days ago, deciding to start low for a change at 960 or so FPS i had a fairly flat string ( 10 shots ) BUT ! One of the shots was substantially slower dropping 10 - 12 FPS. Dont know if it is a wonky tin of the 13gr Ko slugs, but i dont think so as it repeated the behavior several times. Anyway i will shoot the Maverick on Wednesday and probably also ramp up the speed some. Praying my M8 dont have me pegged for too much work on the railroad, CUZ the weather so far look to be really good, so i would prefer to just shoot.

This was a very good video. I wonder how the shot count is .177 with your tune ? That set up is good small game set up , flat shooting.

matt dubber discussed this also. if the pellet/slug reaches the end of the barrel the valve should be off already. thats the most efficient tune you'll get to your pcp.. thats the basic of tuning a pcp rifle.

Hey when you start talking about spread and velocity around 20:25 did you touch the second regulator anymore from the first time when you went from 110 or so to 125 im really just trying to understand everything lol and the reason you did that was because your spread was not ideal for you at the 985 ? Am I following you on that ?

Hei Peter - bruker du pinprobe eller original probe ved test av STX Superior/STX Superior Heavy 700mm liner? Tore

Excellent video! hey so I just bought an M3 like two months ago its a .25 Cal 600 mm barrel and its shooting at about 989 with 1st reg at 160 and second reg at 110 with power wheel at 16 and micro pretty much maxed as well and the valve probably on or past line 5 and its a rough 989 not harmonic at all very intense recoil so my question is if i put my second reg at 120 125 will I be able to hit a thousand fps 1000-1025 give or take like yours and then also be able to calm the gun down as well less kick etc.. its completely stock no upgrades thank you I appreciate it.

That’s interesting that when you increase the velocity the spread reduced. So, to increase the velocity, you were raising the hammer spring tension using the power wheel up to the maximum number? Was the second reg still at 118bar? Were you adjusting the front valve each time you raised the velocity (power wheel?) to get the slightly reduced speed then wind back out to get back to desired speed?

Hello there. Awesome video! What was your regulator at 1018 FPS?

Where to buy 700mm barrel of 177 Calibre?

I've always told everyone, don't chase numbers. The rifle should be allowed to show you what works for precision accuracy. Low ES/SD does NOT mean it will be accurate. My 25cal 980fps 34gr has 25fps ES & its insanely accurate. 30cal 44.5gr 1004fps 14ES (110 shots) again insanely accurate

I didn't know FX made a .177 700mm barrel ? FX is treating .177 shooters like red headed step children (nothing against the red-haired people) 😁👍🏻