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How to adjust the power on your BT65 Class Airgun

Expert Airgun Reviews / AirgunWeb / AirgunWebTV

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It’s a question that I get asked quite often, “how do I adjust the power on my BT65?” It’s extremely simple to do and I’ll walk you through the process here. Before I start I need to say the following:
WARNING, working on your own airgun can be very dangerous. It will also likely void any and all warranties on your product. Repairs and maintenance should only be performed by qualified, factory trained technicians. By working on your airgun, or modifying your airgun, you assume all responsibilities for any and all damages that may be caused to your airgun, person or persons, and property.
In other words.. “don’t do this at home...”
Now, here's how I adjust the power on my BT65
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Опубликовано:

28 авг 2024

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Комментарии : 94

@borislavradonjic660 11 месяцев назад

The little spring on the side (for the magazine or something) jumped off on me last night and i was looking for it for half an hour just to find out it landed under my nose 5mm from the place where it sits :) It was so stressful so people should watch out for that. Its the plate with the name on the opposite side of the bolt.

@joeking4389 9 лет назад

although I don't have this gun, I still enjoy watching and learning these things. Thanks.

@regsparkes6507 9 лет назад

Joe King Yes Joe, ditto for me too. Never to late to learn something else for sure. Thanks Rick.

@robbyd5342 8 лет назад

You are right Rick. In fact, I've changed my mind since posting the question. I also remembered your statement "that's pretty good for an unregulated gun", when reviewing the BT65. The velocities are very, very close according to my ProChrono through the first 11-12 shots, and it doesn't nose dive even after 13 or 14 shots. I'll be turning up the power but saving the money on the regulator. I may, however, wait until I put another 1000 or so shots through it, or until it's out of warranty. Whichever comes first. Thank you Rick !!

@AirGunWeb 8 лет назад

+Big Rob - my pleasure.. just keeping it real :).. no need to spend money when there's no benefit. Cheers AGW

@sidtwoface 7 лет назад

Robby D How many turns you made the screw for power? thanks...

@southeastairgun2118 7 лет назад

Hey Rick, thank you for the video. Adjusted my .35 cal and now it's shooting the JSB 81.02 gr pellets at 760 FPS for 103.9 FPE. Pretty cool for just turning an allen screw. Robby

@sidtwoface 7 лет назад

Southeastairgun Hello. Can you tell me how many turns you make with the screw? Thanks

@dartagnanv8der613 8 лет назад

Thank you Rick! My shopping cart includes the Carnivore but hesitate to move forward because there isn't much how-to or maintenance videos. This video helps because the Carnivore is NOT regulated so tuning is necessary for the purpose of the shooter.

@joeibrahimi6009 5 лет назад

Thanks for all vids on all hatsans,and the work you put into making these guns.Hatsan best airguns,best price!

@jaygeeantonio 6 месяцев назад

A lil trick for next time short end up is for snugging short end down is for high torque/torquing

@borislavradonjic660 11 месяцев назад

Thanks for the video, on my hatsan the part that holds the optics has become a little loose, today im going to tighten these two bolts. My is in .177 at 51 joules, its like a laser on 20 or 70 meters... so happy.

@Chrissy22 6 лет назад

It would be nice to see a vid on the new model of bt65 explaining how too replace the breech o ring. And a vid on complete rebuilding it would be even nicer

@budchestnut9303 8 лет назад

Respectfully Rick you should use BLUE loctite. It will not loosen but can be loosened with force. If you use red which is designed for mounting studs and truly permanent threads, you might destroy the screw head and have to drill and tap it out later trying to remove it or you might have to use heat! NG! Never say. Tnx for the vid.

@DK-gs1pf 9 лет назад

Great video Rick. Hoping you do one on the Galatian soon.

@tomatepintor6203 3 года назад

Que buen vídeo. Si se instala un regulador al BT65sb cal 22 se llena a 200 bares o menos ??

@LucMifsud 4 года назад

Thanks for clear guide

@terrynb12 6 лет назад

I use all appropriate drivers butthe screws hatsan used are very soft. I had to to cut a groove to remove the center screw.

@glasserallen 3 года назад

Great video as usual well done, How many maximum turns of the screw do you think you would be able to get out of the bt65??????

@funwiththeandersons8961 2 года назад

The shroud of my 357 is lose and spins freely I can’t get it to tighten what do I gotta do thanks for the good vid

@OkeliOY 2 года назад

Great video. Do you have to unpressurize the air tank before removal ?

@270866pampers 7 лет назад

I just tried turning down the power but the allen screw/adjuster fully backed off only dropped the power by 5 ft/lbs...it still is cracking out 28 plus ft/lbs...any ideas anyone as the rifle is just powerfull and accuracy is poor. It is a 40 joules model in .177 cal.

@disrespectfulkid83 5 лет назад

awesome video man... Can you make a video on how to charge the tank on the hatsan big bore "carnivore".

@HarbardWild 9 лет назад

It's kinda creepy, i was just doing the exact same thing with me BT65 .25 that i received yesterday :P having been tinkering with it but not finding any good diagrams of how to take it apart, this video is just in time.. like i said, creepy coincident!

@AlwaysCovered1227 6 лет назад

Hey Rick I just purchased a bt65 qe in 22cal my question is can I increase the power or is it at full power straight out of the box

@kamranhye6650 8 лет назад

Hi Rick, this is the video where you are showing that turning the hammer tensioner screw clockwise is increasing the power on BT65 and on the other Hatsan AT44-10 Tactical you are showing that turning the same screw clockwise is decreasing the power. Please clarify the correct method for me with the AT44 please Rick. Thanks a lot

@AirGunWeb 8 лет назад

+Kamran Hye - follow the directions in the videos.. BT65 - clockwise increases the hammer spring tension.. AT44 - clockwise decreases the hammer tension. cheers AGW

@AshleyAndHerCat2486 7 лет назад

how fast are the lowest and the highest speed? I want to know how far is the difference could be. thanks!

@whatsyurprob158 4 года назад

Excuse me, but I just purchased the .357 model, and I understand that there's a separate essential part that doesn't come with the gun, and I think it has something to do with a 'spout' for loading. Can you tell what part this would be? I'm going to be using a hand pump. Thank You, very much!!!

@jack-ds5sp 9 лет назад

Love your videos!!

@whatsyurprob158 4 года назад

Is this process the same for a BT .357 Carnivore? I just bought one TODAY, and I want to tune and enhance it, especially the PFE. I understand the transfer port can be enlarged as well, and am wondering if it's a common practice to do so with these rifles. Please forgive me, but I'm brand new at this hobby. Fyi, you're a pretty famous Technician. Your name is common place amongst shooters, and noe, I can see why.

@Cisco1322 2 месяца назад

It’s it possible to put a regulator gage on the bt65sb?

@slyo78 4 года назад

what kind of oil you use in this Bt 65 because i dont uderstand (im from Hungary sorry). that in the blue tube, what is this ?? Red oak or what ??

@azdubz2021 4 года назад

In America we call it Loctite (Google it) There's Blue Loctite for when you want the screw to stay screwed in permanently Red Loctite for same, except only semi-permanent. Hope that helps !

@TheDirtyvermonter 2 года назад

I just got the carnivore in .357 im gonna power tune her and see what she can do

@nickalspaugh3097 Год назад

Is this Gun still good in 2022?

@rane2324 Год назад

Will i get more shots/fill

@Croozer 9 лет назад

Nice allen set, who makes that?

@sunnygurchani 7 лет назад

Hi Rick, i don't have a chronograph at the moment , i have messed with hammer screw and can't remember the factory setiing of that screw. Could you please help me out by some picture of the inside or measurement with an Allen key of the default factory setting?

@trevor-bd4kt 5 лет назад

Hey Rick..is it possible to drill holes for access to adjuster like on the AT44 so I don't have to remove stock for adjust. Seems like a PITA to have to remove stock when trying to tune with chrony.

@andywales666 8 лет назад

Would this technique work for the Galatian iv or is that a totally different gun mechanism?

@ervertebra8848 5 лет назад

hello I'm sorry but this also works on hatsat bt 65 7,5 joule? tnx

@pllagunos 9 лет назад

Rick, isn't the .177 bt65 shooting way to hot in this caliber? What is the velocity you have it set up for? and how many shots do you get? Good video as always

@AirGunWeb 9 лет назад

plls12 - generally speaking yes.. the .177 is not the optimal caliber for the BT65 platform, even with minimal pressure on the hammer spring. I have this one for testing the new H&N pellets that are coming out. Sniper magnums are 15 grain in .177 for example. So far things are promising. I have more testing to do. More than likely I'm going to regulate this rifle and try and get maximum use from the large air cylinder. Should be a fun thing to video no? Cheers AGW

@pllagunos 9 лет назад

Airgun Expert & Critic - Rick Eutsler / AirgunWeb Of course

@genarolopez6299 2 года назад

Hei , can you increase the power in my hatsan bt65 qe .35 i want to make mor power i dont care oees shots more fps

@edtorres3124 9 лет назад

can you do this on a Hatsan AT44 long QE ?

@sebastiancaskey541 2 года назад

Rick can you help me with a trigger problem

@AirGunWeb 2 года назад

What is the issue. If it’s a Hatsan, you will need to contact them directly. Cheers AGW

@josephwargo2959 3 года назад

Been searching forever for a. Video of the bt65 replacing the o ring in the breach and how to take the barrel off. That's I. English and doesn't have annoying music or a dude who doesn't get to the point

@JohnWisconsin 9 лет назад

Not sure if I missed it or ? In order to remove the HPA cylinder, did you empty it somehow or was it left filled and there's a check valve of sorts on it?

@AirGunWeb 9 лет назад

JohnWisconsin - The cylinder is self-contained. The valve for the rifle is part of the cylinder. You do not need to degass it to remove it. The added benefit is that you can have more than one and take them into the field with you. Better than having to take your tank or pump with you. Cheers AGW

@rebeltoharriganjr6158 9 лет назад

Can you do a video on how to adjust the power on AT44-10?

@AirGunWeb 9 лет назад

+Rebelto Harrigan jr - I hope to at some point. It's not hard.. just slightly different than the BT65. Cheers AGW

@rebeltoharriganjr6158 9 лет назад

Thanks, I hope to see one soon to improve my accuracy with heavier ammo and at longer ranges of up to 75-80 yards.

@amessad 8 лет назад

Hey great video! Rick do you know if it is the same for the Galatian iv?... Thanks man...

@AirGunWeb 8 лет назад

+amessad - I have not gotten into my Galatian yet.. I guess I'll have to take a look under the hood at some point. cheers AGW

@kenandKait 9 лет назад

Please show how to do the adjustment on the at44 pa

@AirGunWeb 9 лет назад

ken oiler - I will get to it in the next couple of months. Cheers, AGW

@franksimeoni5380 6 лет назад

I need help !!!! I made a bit of a mess with the spring adjustment of my bt 65 .25 cal. And I can not remember the number of laps done. Would you like to tell me how to restore the factory setting? Thank you!

@AirGunWeb 6 лет назад

I don’t have one anymore. You need a chronograph to tune these guns or you are just turning screws blindly. Try turning it in all the way and then backing it out one full turn. Start there. Cheers AGW

@SlingshotShooters 8 лет назад

Using Red loctite on screws is asking for a problem if you ever want to get the screw back out. It will take heat to remove it. Blue loctite is a much better choice!

@AirGunWeb 8 лет назад

+Slingshot Shooters - I'll give it a try next time I get one apart. I've had issues with the blue stuff not sticking. On the other hand, I've also learned that some of the things loosening up were caused by dry firing the gun to much. Once or twice is ok while tuning up the trigger.. but sitting there and dry firing for 30 shots can really screw things up. Fortunately I have not had that problem personally, but others I've talked to have had issues. Don't dry fire these unless you really know what you are doing. The super heavy hammer hits the assembly where the cylinder screws into and starts to loosen everything up. Not a good thing. Cheers AGW

@robbyd5342 8 лет назад

Hey Rick. I am going to put an Altaros regulator on my .35 Carnivore. Am I correct in assuming that the regulator will still do it's job if I turn the power up to about 110 FPE? Also, will turning the power up considerably make the rifle harder to cock? They're already a bit stiff, but after 5-6 mags it's no longer an issue to me. It loosened up nicely. Thanks

@AirGunWeb 8 лет назад

+Big Rob - putting a reg in the .35 is not going to help you. The .35 does very well without a reg.. The reg will not give you the volume to get the power. You should not have a significant increase in cocking effort by turning up the power. Cheers, AGW

@Douger318 Год назад

what was your bt65 shooting at and what pellet weight

@mihoubmihoub218 4 года назад

Please i have problème with m'y BT 65 van you help me

@texasdirt6057 4 года назад

How do you get the tank to unscrew if it is tight and can you do it with air in the tank

@lorka42 3 года назад

use no tools, and yes, just be careful not to bump the protrusion at the non fill end. they come with a cover you can screw onto the air tank when it is not in the gun, to keep it clean, and safe.

@maddiekendallmyers1063 9 лет назад

Rick, I've been waiting for a BT65 wood stock QE. Is your gun THAT gun? And if so, how does one find it? Thx!!

@AirGunWeb 9 лет назад

+Mike Myers - this is my custom gun.. took a wood bt65 and added the QE to it. I have a video that I'll be posting soon that shows the process. Cheers AGW

@budchestnut9303 8 лет назад

Hi again Rick! do you have a contact where I could order that wooden stock to fit my new 30 CAL, BT 65 Carnivore? The synthetic is OK but the wood is beautiful and warm!

@AirGunWeb 8 лет назад

Try contacting hatsanusa.com cheers AGW

@sidtwoface 7 лет назад

Expert Airgun Reviews / AirgunWeb / AirgunWebTV I made two full circles the screw, but I don't see any difference. it, needs a lot of circles? and you lose shots, if it gets more power?

@azdubz2021 4 года назад

This is so weird. I followed Rick's directions and turned the "power" adjustment screw (6mm allen) 2 full turns clockwise.... ....and my fps stayed at 700. It was 700 BEFORE I did the adjustment and 700 AFTER I did the adjustment. BTW, that's at 200 bar for both. Anyone have any ideas?

@azdubz2021 4 года назад

Also, there's only one half of a turn left until it's turned all the way in (up)

@AlwaysCovered1227 4 года назад

I don’t know if a mistake was made in this video or if my BT65 was different for some reason but When I got my BT65 I had to turn the hammer spring in the opposite direction of what was said in this video. Did you have any luck with getting a higher velocity?

@tehfear 9 лет назад

Any update on the sig guns?

@AirGunWeb 9 лет назад

***** - not yet... cheers AGW

@rafaelzkm 8 лет назад

hi, Rick if I lower the power of a bt65 .22 to 35 fpe how many shots I could possibly get?

@AirGunWeb 8 лет назад

+Rafael Munguia - not sure. best way to get more shots is to install a regulator. Contact www.airgunproshop.com to order one. Cheers AGW

@rafaelzkm 8 лет назад

+Airgun Expert & Critic - Rick Eutsler / AirgunWeb thank you

@lukes-uf4bc 9 лет назад

Hi,come on Rick pleaseee u extended 2 month now for the test of the crosman "bulldog"!!!!!! ....and the test of the new Airforce "texan"???? ,Thanks

@AirGunWeb 9 лет назад

+lukes 2777 - yep.. bottom line is the gun was a terrible disappointment. I have video footage in the can and I will get to the "review" when I have time. I'm having to do it on my own dime however and so billable work has to come first. My hope is to get it done this month. I know you'll want details on why I was disappointed, you'll have to wait for the review. I'll probably post a series about it on my site as well. Cheers AGW

@lukes-uf4bc 9 лет назад

ok can u review the beast of the Airforce texan???? thanks

@AirGunWeb 9 лет назад

+lukes 2777 - maybe one day. Best thing to do is email Air Force and ask them to provide me one to review. The more folks that ask, the higher possibility of me getting to do it. Cheers AGW

@lukes-uf4bc 9 лет назад

ok thanks it seems tobe a beast texan rifle !!!!..

@AirGunWeb 9 лет назад

+lukes 2777 - just a note.. I have a Texan coming in for review. it will be October before I get to it however. Cheers AGW

@medfoto1 4 года назад

I'm sorry but when I saw that he didn't know he could use the other end of the Allen wrench to get more torque instead of using pliers I lost all confidence in his abilities.

@sirgillium1970 9 лет назад

First

@carldodge8294 5 лет назад

gun is junk heavy. mags jamb. hard to load . high ping. not very accurate.

@TimSwan 5 лет назад

Rick, how would I know if I turned the hammer tension clockwise too much? You did not mention that in this tutorial but did mention loosening too much. My .30 caliber will cock & shoot but the bolt will not seat in the back slot position. I'm trying to get 75 FPE using the JSB 50.14Gr pellets.

@TimSwan 5 лет назад

Update: I backed off the hammer tension 1/4 of a turn & my ProChronoDLX recorded Shot #9 thru #14 at 821 to 825fps. Using the JSB 50.14Gr pellets, I achieved the 75FPE mark & the bolt will seat in the back slot after a full cocking action. Not sure how to get this to rifle to 80FPE, though.