FX Airguns Impact "X" .25 (Review) + TUNING GUIDE! + FULL SETUP - How to Tune a Regulated PCP Airgun 

Three years later, this video is still extremely prevalent and underrated. Thanks for giving me a better understanding of my Impact.

Your hard work in making your channel into the gold standard of air gun reviews seems to have paid off. You look like you’re fulfilling both versions of the old saw, “Virtue is its own reward” and “Virtue is its own punishment.” You have the respect of both the industry and users, and consequently you’ve been piled with so much work I bet you’re wondering when you’ll find time for a life. You’re a smart guy, so I’m sure you’ll know when to tell us to pound sand and break with your family. Congratulations and I’m liking forward to coming editions.

Steve, this is a monster of a video! If i had an fx impact, i would have NO reservations about adjusting it after watching such a simple and thorough video. you have outdone yourself here, exceptionally well done.

Thank you so much for taking the time and energy in sharing this ! SINCERELY appreciate it!, I have an FX impact X MK2 to be delivered this week finally.

Some times , just some times you find a little gem on RU-vid. This vlog is one of them . Brilliant job 👍

Steve, Thanks for keeping this video up. I used your tips to Harmonic tune both my .22 and .25 FX Impacts this afternoon. Both rifles had increases in velocity and the ES were both under 6 FPS and SD's at 2. As always your information is in depth and accurate. Aloha, Mike

Steve - I'm just echoing others at that point but this video is more informative than a dozen others I've watched on the subject, combined. I've had my Impact for well over a year but have been hesitant to tinker with fine-tuning it because I didn't know exactly how I was affecting the gun's functions. Thanks for all you do.

Nice job as usual Steve, I know this took a long time to put together, and we appreciate your efforts!!

Good job Steve. Thanks for your time and efforts!!! 👍🏽👍🏽

Watched this for something like the 4th or 5th time. Learn something new each time. Can't wait for the next installment. Went to the range and tested some of the tuning as you recommended. Am seeing improvements in the groupings, getting better shot groups, improvements in my confidence shooting. Best group today was 16 shots in 1.5 inch raged hole. Big improvement, and hope to do better. Thank you for the information, and please keep it coming.

thank you for this detailed description of the x barrel system. I was having problems with my .22 fixed shroud. my point of impact would keep moving after about 6 shots. I removed the 3 o rings that were holding the insert. instantly the groups held steady and tightened. again, thank you.

I have just received now ...25 July 2019...my brand new FX Impact Mk2 600mm barrel in .22cal....and out of the box my reg was set at 85 bar and shooting 100fps after a look around I found that valve bumper stop was set right in.....after screwing it out fully and winding the reg up to 125 bar then setting the hammer spring to push my 18.3 grain pellets to 920fps .......after that I set the bumper valve stop in till the 920fps dropped to 890 for maximum air efficiency.......works like a charm.

outstanding trying to understand the FX Impact, answered many questions and explained how to on everything on the is rifle-it's a must watch but make sure you are ready to take notes!!

Nice job explaining the ins and outs of this great platform. The FX Airguns are IMHO, what appears to be the Holy Grail of Air Rifles.

Thank you for demonstrating the barrel kits that is the first video of its kind that I have seen so far.

An incredible amount of information and superb presentation. Great Job Steve.

I want to add, THANKS TO UTAH AIRGUNS for helping me with this. Without them I would never of figured this out. Naples Fla.

i just picked mine up - i appreciate you taking the time to make this vid. Very helpful.

Fantastic Steve! Your tutorial is crystal clear. Concise, informative, entertaining, and keeps the viewer locked to the screen.

Thank you thank you thank you Steve. Just bought my first Impact... The Mark II and had no idea where to begin on tuning or changing the barrel. There may be differences on the Mark II but this helps a lot

Yes I just purchased the FX Impact w/ the 700mm barrel in .25 cal. And it’s a great gun I read all the instruction on the tuning I put it @ 150 it shoots great but I think I’m going to tune it back down 145 bar; it came set @ 140 bar. The max regulator pressure is 150 bar... it shoots pellet’s hole-n-hole right now @ 50 yards.

Thank you for a well done job. I have had my .30 cal FX impact for over 2 years and did not know how to tune it as I do now after watching your video. After your video, I got it ready for deer hunting in Central Florida shooting at 79.30 fpe with the original smooth twist barrel after increasing the regulator pressure as indicated on your video. I ordered a 700mm .30 cal smooth twist x and hopefully I can get it to perform at the 85-90 fpe for deer hunting. Its shooting one hole groups at 42 yards. I like my two tone .30 caliber FX Impact. It shoots the JSB heavies 51.0 gr GREAT.

Steve, thank you very much for your hard work to share your knowledge. FX Impact X is in my near future. Again, thank you.

Thank you. I don’t have a impact yet! I have a Wildcat compact. But this knowledge is priceless thanks for all you do.

Great video Steve, just a little detail, the valve adjust screw (bumper) adjust the over opening fire valve, this part stop the fire valve pin as you say when is open, hammer rebound is not problem in FX, they use a light weight hammer and short spring in all FX airguns. I will see you in Utah cheers!!

Thank you very much for all this information. I just bought the FX Impact X compact and two additional barrel kits and thought " this looks complicated"...but your video explains it all.

as a prospective new enthusiast to this sport, I greatly appreciate the terrific job you have done here to take the intimidation factor out of this...GREAT job

GREAT I AM SO GLAD YOU ARE DOING A VLOG,ON AIRGUNS,AS YOU ARE THE MOST TRUST WORTHY PERSON I HAVE SEEN DOING THIS . AND NON INTIMIDATING . KEEP UP THE GOOD WORK .. GOD BLESS AND GOOD SHOOTIN'

Great video Steve. I cannot wait to get into my FX Crown .177 Green Laminate! Looking forward to learning more about the amazing technology FX has been coming up with.

I’m a complete shooting newb and especially so with air rifles, but I’m planning on getting stuck right into it (benchrest and small vermin extermination). I’ve been agonising over what PCP to go for (after a decent under lever), and I’m fascinated (& yes, intimated) by the Impact. I’ve watched quite a few excellent videos on them, but this one is by far the best. Just brilliant, exactly the right level of complexity for me to grasp. I’ll be watching this a few more times to fully get my head around everything, but at least I’m starting to feel some confidence in the possibility of owning one. Thanks heaps 🍻

Steve - dude.... Seriously thank you for this video! I just got my Impact X and I LOVE IT - but.... I am a U.S. Army Trained Unit Armorer and this rifle still seriously worried me to mess with it. This video is gold man - keep it up!

Steve great video, I didn't know much on the tuning side of this rifle and you made it real clear and on point sir. Love it

Thanks Steve. Fantastic video!

Steve, thanks for the awesome review!!! And I agree with the volousity speeds, as some I always thought faster was best, when I first started with pcp. But it didn't take long long to figure out that wasn't true. Thanks again for the review.

Absolutely right, the Impact is for a smaller community that want to adjust the gun to very specifically shoot for a given ammunition and conditions. Picked up one a few months ago, but I had adjusting experience with a Marauder (love turning the wrenches). Perfect for me, not for a beginner! Beginners should stick with Wildcat or Royale. Excellent guns!!!!!

I’ve been thinking about a Daystate Wolverine R with the lever action because I shoot left handed. Then I saw a Mike Knipp video and he was very comfortable shooting the Impact as a lefty so I started reconsidering the Impact because it has the power I want. I’ve tinkered with my starter gun and now I’m comfortable and confident that I will not mess up the regulator on the Impact AND now that you explained the process I’m sure I’ll be OK. I bought a Gamo Urban, got the barrel shrouded, installed the GRT-4G, lightened the hammer, installed a BSA Buccaneer cylinder, and installed a Lane Roberts Lancet MK9 regulator. Now I get 50 shots at 21 fpe with less than a 20 fps and even at 60 shots the poi does not change at 44 yards. I did more like enlarging the transfer port and increased the valve spring resistance, but I don’t think that made much of a difference... I actually returned the valve spring resistance to original. I was going to get another Urban, but I really do like the power and versatility of the Impact. I think I’ll start with the .25 with a 700mm barrel. Thanks for this great video. I was going to pull the trigger anyway, but now my mind is more at ease. Now I just need to come up with the 2 stacks to purchase it! Again... great video!!!

Seen this several times, good refresher!!! Thank you.

Best video I have ever seen on explaining all the gizmos. THANKS

Bravo! very informative. I am not a hunter but I love airguns. During my young age in the Philippines my late father made airguns for the hunters in my village. I just bought one because I love the concept of the gun. With your videos its encourage me to shoot again with airgun and maybe one day I will go hunting with my beautiful FX Impact

Thx Steve..Great job. You never waste my time. Everything was what I needed to know.

i bought fx impact .22 700mm sniper. it is hell of the gun!!, love it

Thank you, Steve! I had to watch this as I just received the .30 - 700 mm for my first gen Impact. Got it from UA and it didn't come with a grub screw so I was at a loss for securing the barrel. You provided that information and then some! Thanks again. Cheers and see you in October, my friend.

Awesome video for vlog Steve !!!!!

Awesome work Steve! I have a 30 cal Impact and I only slightly adjusted the front valve adjustment knob. I have no intention of messing with the regulator adjustment as the gun works perfectly as is. I have no current need to go to the X barrel as the standard smooth twist barrel meets all my needs.

That's a fantastic video Steve. Thanks for the in depth video. I am looking forward to the dreamline and the ability to customize it.

Steve awesome video man. I just got my impact and your video really helped me out with the questions I needed

Great video that answers all the question I had. It also help me decided to buy this gun today. Thank you!

i am still not at the end of the video , but it seems to be the one i was looking for for longgggg thank you !!!!!

You're like the Bob Ross of airguns… Seriously dude... So much that it will be here Thursday... Thank you bro...

Thank you I appreciate everything you do for us in bringing us this information.

You have the best reviews !!!!! Thank you I'm not scared anymore.... I think I'm going to try a 900 fps tune now

thank you soo much steve for this video ive been hoping and dreaming about the day youd make this video i am a new owner of the fx impact x in .25 cal with the 700mm barrel i will be looking forward to more videos you do such a great job i check your channel everyday an now you got 2 AWESOME !!! your the best

As a .30 Cal FX owner from the UK Steve I find this video extremely helpful in tuning my rifle...the only downside to owning one of these rifles is that unfortunately the USA has the lions share of all the aftermarket accessories for these rifles ..eg X barrels/ liners/slug liners which are extremely difficult to obtain over here . I feel Mr Axelson and co should ship these accessories to EVERY country they ship the rifles too and not just the USA.... personally I feel this is a black mark against FX's otherwise fine reputation.....I guess it's all about money. Really enjoy all of your reviews, regards from the UK...

That was a awesome vid on how to change the new smooth twist x system's I appreciate your time to share your know and in plan English good job steve

You do very good vids Steve. This is going to be my first PCP, and you did a really good job of explaining the functions of it. I do see another reason for the o-rings on the insert though. The insert is long and small in diameter, and that means when you tighten the end cap, you are compressing the long insert into the breech. A rule of thumb I learned back in the engineering school days was when you have something that is 8 times or more longer than the diameter, (and this is about 45 times longer than the diameter), it will tend to "bow" under compression, (why you don't want to over tighten the end cap). The o-rings support the middle section of the insert to help keep the insert from bowing. I am sure it would be better to leave the o-rings in there. The insert will want to bow the most in the middle, so one o-ring there, and 2 more making the insert 1/4 length between o-rings, and not over tightening the end cap will keep the insert as straight as it can be. I would think if you only have 2 o-rings for the shorter barrels, place them so they divide the length of the insert equally if possible. "I'm Smart! I'm Smart! I coulda been a contender!" :) Now that I know what gun I am going to buy this winter, do you have any vids of the better compressors out there? Thanks for all you do Steve. A guy from Michigan.

Hi Steve, got my impact and yesterday I change the barrel (from 0.22 to 0.25, your video was great for that) and adjust the HST with allen. Pretty sure it was 1.5mm wrench, also CW or CCW is confusing since all depend if you in front or in the back, for me was easy to understand, turn it down will increase tension, turn it up, will decrease it, just my 2 cents. Again great video and thanks for sharing (FX Impact X 0.22 0.25 and 0.30 owner) BTW flawless change, awesome airgun.

Amazing video, Thanks for taking the time to make it!

Fantastic tutorial! Automatically subbed. Always great content you make!

Thanks for all the great information Steve. I will purchase my FX Impact .30 next year. I am subscribed to both of your channels.

Good video Steve ! And believe me Ima tinker and I NEED AN FX Impact!!! Can't wait to have mine

Great Video again Steve thanks for sharing with us. By the way i was expecting the unboxing, review, discuss and win of that big refrigerator on the back 🤣

Wow superb presentation. Great Job Steve.Thank you.

Thnx. Steve for the information; I have the same gun the one just before they went to the MK II without then they now have with the 2nd plenum to the Power Plenum even though I have the same gun smooth twist X barrel 1 payment from done so I've owned it for almost 1 year. All of them are great upgrades of the original FX Impacts.

Mine is on its way for Tuesday. I’m watching this video most likely 5 more times

Thanks for your effort in explaining this content. And you are the first person i have come across in this land of youtube to finally pronounce a pellet shape as DIABOLO, all too many write and dictate it as DIABLO.

Awesome information Steve and great video! Thanks

Thank you so much for full information!

Good Information, but still it is one of my bucket list airgun. You're one of the best out there.

Thanks for the good vid. I know now that I will never get this gun until I get some experience first.

Nice kitchen remodel! Nice review, as always.

Steve i said he is the best , the best you tube channel ever....honestly, .... the best attitude of Steve... thank you Sir, i mean Steve....

Very informative. Thanks for sharing

Very good video Steve. Thanks for do this for us.

excellent thanks for teaching. my impact will arrive tommorow

Great video Steve! I've been thinking about an Impact, but it scared me a little. No longer!

GREAT WORK !!!

Great video! Massively informative - thank you 🙏

Very honest and informative video review!

Great comprehensive instructions

Really enjoyed this channel!

Amazing video, very high level but in plain and simple terms. Thank you for your time

Steve very nice class , the explanation was well done.

Very informative,thanks for doing this video.

very good video will help me a lot, thank you very much

Thank you so much for this nice video. Thanks for sharing/teaching us. More power to you. God bless.

I got my FX Impact MkII in .22 at 997 FFS with the reg at a little less than 120 BAR and the hammer set on 4. Very happy. I highly suggest the FX chrono too. Utah Airguns pre-tuned the trigger tension. I didn't touch it. On Max it should have little play. BTW, leave the O-rings in the barrel. Harmonics effect accuracy. It's not for the sound. You don't want your barrel to oscillate much when you fire it.

Hi, Steve I am very glad that you have taking the time to explain step by step on how the FX impact works and how to change barrels, escpecilly with the new barrel liners. For the old and new owners of the FX impacts which is a great relieve to know how to change the liners to avoid any damages. I am still learning on how everything works in armony between gauges adjustments. It's really a little challenge in comparison with the regular PCP's. It's just about adding some love to it, and everything will runs smoothly! Steve, Do you know when the new FX Impact liners are going to be available in the USA, Is there any specifc date? We all will appreciated your response. Thank you and keep us informed with the new line of air rifles. Have a great day! Al

Very informative. Thanks for sharing.

Awsome vidio and a awsome presentation on that FX Steve , very nice

Great video Steve. Love the shirt.

Great job, FX are really leading the way in technology, it’s fun that we get to play and tinker with their innovation too. Thanks for a great video. It does however make it harder to choose what initial caliber to start with. I do not own an impact yet, but I feel it’s going to get expensive 😬

Great explanation - Thx Steve

fx just made there sell double in the USA. good move dare i say take over. Now all they need is a 300$ starter gun. A better under standing means sells and more thing to play with plus you get to us tools. its every guys dream. Thanks steve now i got to get one.

Awsome information, I rely on you the most

Very Good!!! Quero ver um próximo vídeo com agrupamentos de todos esses calibres.

Boy did I need to watch this video...I am a proud new owner of the FX Impact X with Power Plenum. It's in 25 cal and I have a 35 cal kit coming for it. Now I know how simple it is to change calibers out

Very helpful. I now have a better understanding of how the different adjustments affect the overall system. Do you have any information on when the smooth twist X barrels with higher twist rates will become available?

very versatile air gun

Great information. Now I learn alots about my fx mk//.