Huben K1 - A short look of accuracy testing

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Hubenairgun

Member
Manufacturer
Nov 22, 2015
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Hong Kong, China
Because of moving to new factory to manufacture K1 by ourselves, everything started from the beginning again. Today, I have a chance to spend some time in accuracy testing workshop, below information share with all of you.



1. Test pellets

1569050744_3138571645d85d0786a68c0.74877556_Test pellets.jpg


2. Test at 50mts

1569050786_9000654485d85d0a289ff04.45074753_50mtrs.jpg


3. JSB EXACT JUMBO HEAVY (1.175g/18.13gr)

Group 1#: 5 shots

Shooting video: https://www.facebook.com/jacky.ling.52459/videos/pcb.136662647608726/136662500942074/?type=3&theater

1569050895_19867529195d85d10f1759c3.59182443_Light-1.jpg


Group 2#: 5 shots

Shooting video: https://www.facebook.com/jacky.ling.52459/videos/pcb.136663257608665/136663110942013/?type=3&theater

1569050969_10574329305d85d1596c2255.27782883_Light-2.jpg


Group 3#: 19 shots

Shooting video: https://www.facebook.com/jacky.ling.52459/videos/pcb.136664224275235/136664024275255/?type=3&theater

1569051058_11248327195d85d1b2d05ef1.41761516_Light-3 A.jpg
1569051075_8128648965d85d1c396efe7.23914376_Light-3 B.jpg
1569051089_4701232475d85d1d1006758.96246912_Light-3 C.jpg


1569051109_10287289425d85d1e5662271.47309657_Light-3 D.jpg


4. JSB EXACT JUMBO BEAST (2.2g/33.956gr)

Group 1#: 5 shots

Shooting video: https://www.facebook.com/jacky.ling.52459/videos/pcb.136664997608491/136664897608501/?type=3&theater

1569051180_6587121095d85d22ce14ac9.99011000_Heavy-1.jpg


Group 2#: 19 shots

Shooting video: https://www.facebook.com/jacky.ling.52459/videos/pcb.136665980941726/136665470941777/?type=3&theater

1569051257_14906036485d85d279267967.34756519_Heavy-2 A.jpg
1569051272_11985136115d85d2882955a3.06310093_Heavy-2 B.jpg
1569051285_20902370415d85d295beda84.27245994_Heavy-2 C.jpg


1569051305_514760955d85d2a91a6889.70416417_Heavy-2 D.jpg
1569051320_5027385815d85d2b8960ad6.65726793_Heavy-2 E.jpg




If more testing result, will keep you update! Thanks!
 
1569233972_8356138475d889c34c20ab2.26654893_Ling_FB.PNG


Remember members, if you are a FaceBook user you must be a FRIEND of Jacky.Ling in order to watch the above described videos.
Jacky Ling's FB page is here: https://www.facebook.com/jacky.ling.52459

Once you are a FRIEND you will be able to see the videos as the account appears to be set to friends only.



Hajimoto
 
Upvote 0
1569259841_14400937805d89014106c469.93795850_AB9D51C9-A06D-4D93-825E-ACF78FA6BC7A.jpeg
I have a huben k1 .25 v4 like yours but I shoot 70m of all bullets 10 cm apart. I found out the reason is that my pressure regulator has a very slow recovery air and fluctuates between 130-150 after 1 hour even though I pump only 240 bar. I am very sad and find ways to fix this but not. I disassembled the pressure and clean like Mr. Kelly's videos but it didn't work. I was going to buy a Huma pressure regulator instead but they were out of stock. Is there any way to help me?
 
Upvote 0
1569259841_14400937805d89014106c469.93795850_AB9D51C9-A06D-4D93-825E-ACF78FA6BC7A.jpeg
I have a huben k1 .25 v4 like yours but I shoot 70m of all bullets 10 cm apart. I found out the reason is that my pressure regulator has a very slow recovery air and fluctuates between 130-150 after 1 hour even though I pump only 240 bar. I am very sad and find ways to fix this but not. I disassembled the pressure and clean like Mr. Kelly's videos but it didn't work. I was going to buy a Huma pressure regulator instead but they were out of stock. Is there any way to help me?
Click to expand...

Could you pls kindly contact us by email [email protected]? Our technical department will need more details about the problem you meet, and pls don't worry, we will find the exact problem and solution for you, thanks!
 
Upvote 0
To obtain excellent results with JSB pellets It is necessary to use special batches that have the head measurement equal or greater than 5.52 mm and the shape of the head on its side is more round. With these correct characteristics is obtained in average groups from 15mm to 50 meters at a speed of 300 meters per second. 



See the difference in the head finish of these 2 JSB heavy of 18.13 gr (different batches)



1569498840_5285362355d8ca6d8d424f2.62336334_IMG-20190724-WA0309.jpg


The right pellet is what gets excellent results already the left is not so good. 

These data were obtained in tests with K1 of 3 and 4 generation in the caliber 22
 
Upvote 0
Another item responsible for the improvement of groupings in general is the original suppression system, at the beginning are very good but with a certain time of use the conical filters (separators) accumulate a lot of lead residue and begin to cause flayers. Around here we do the removal of this system and we do another so as not to accumulate residue. 

In my opinion this is a point at which one should be rethought the project




 
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