Huben K1 showed up today
I shot a bunch of 18.1’s at about 895fps and got 5/8-7/8″ groups at 20 yards, not bad for an old guy like me. I also shot some 34gr JSB Beasts at 895fps and they did the same. One click up made 905fps for 62fpe. There is still more to go. Regards, Tom
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JSB 34 & 18 grain. These five pics are around the perimeter of the same pellets that I pushed out of the barrel.
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Hi Darryl, whatever you do, don’t stop collecting aluminum cans lol. If you’re not married, you’re going to fall in love with this bullpup……..just kidding ;).
Both the 18 and 34 grain are accurate. The 34’s are more accurate at 50 yards than the 18’s. In my opinion, I think the 18’s are not as accurate is because the barrel ID is bigger than the pellet. Gregor asked if the new barrels were choked and asked me to push a pellet through. Thanks to him, I found out it’s Choked 30mm from the end of the barrel.
I have tried PDG 26 grain Destroyer, PDG 26 grain Bomb, Eunjin 28.5 & 32.4 grain and the K1 did not like any of them. They all looked like fliers lol. It was freezing cold @ 8,000′ (where I am able to shoot 50 yards) and didn’t see any critters. I don’t think you will have a problem with a head shot.
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Hello again Jaunch,
I’m learning a lot about the K1 from you and Rick.How do you account for the K1’s barrel not grouping the Jumbo Heavy pellets? Any ideas? Also, what do you consider to be a good 50 yard c-t-c grouping for the 34’s? I believe the K1 is considered more a hunting gun than a bench rest competitor, so I’m asking in that regard. Can you kill with it at 50 yards with the 34 grain pellet (head shot?)? If your answer is “yes” then perhaps the water test isn’t necessary. You did say the 34s group at 3/4 inch at 50 yards. That kind of accuracy kills lots of things at that distance. You also mentioned occasional fliers, so maybe a water test will reveal some sort of clipping (after all?). Take your time, though. I’m still collecting aluminum cans for salable scrap! :rofl:
thank you again for the info about this gun. As you read, Rick will want another one despite the issues he’s had.
Darryl
Good morning Darryl! You’re welcome! Okay, please give me some time and I will do the test with 18.1 & 34 grain pellets. I’ve never done this before :).
Yes, I read Ricks review (I’ve replied to him as well) and I too had the same problem with my fill probe which Mike immediately sent a replacement. I hope Rick gets taken care of.
I can’t get good groups @ 50 yards with the JSB18.1 grain but I sure can with the 34’s. Not sure if it was because I cleaned the barrel after. It seems like the 34’s were made for the K1. They fit perfect!
As far as the reg falling off, you have to stay in the green zone of the gauge. Once you fall off your pellet will slightly jamb or it won’t index and the air will start expelling. Once you reach 100 – 110 bar, it will start to dump air.
I purchased a 48″ carbon fiber .21″ rod from tap plastic for $9.99. I had to use it quite a bit to push the pellet back to the magazine. This was my fault though for not watching the gauge lol. I kept loading and shooting lol.
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Jaunch, btw someone with Huben accuracy problems here (see both pages of postings): http://www.network54.com/Forum/79537/thread/1471300243/1/Huben+K1+first+impression
and this discussion: http://www.network54.com/Forum/79537/message/1471492715
His situation is why I asked you for the water test. I wonder if he had an alignment issue. He’s sent the gun back, but not received his full refund yet.
Darryl
Good morning Jaunch,
Thank you for the insight on your topping off and air usage. 3200 psi is sustainable for me. Phew! Good thing that Scuba shop is close by!
As for the “water test”, it would see, tedious (to me) to shoot and retrieve a whole magazine’s worth of pellets from a bucket of water. So maybe it would be reflective if you shot and retrieved each of the first three, then did the same for the last three shots of the magazine? Then if you see a unexpected differences in the markings on the pellets you could extend the test to a full magazine? So, six shots into a bucket of water, retrieving them one shot after the other. If you find something interesting after inspecting the pellets, please post pictures?
thank you,
Darryl
PS I don’t blame you for short-filling the gun. I’ve worked with high pressure air, and a part failure was always in the back of my mind, and that was before I put my cheek up close and personal to a PCP bull pup. Also at what pressure does the regulator “fall off”? Does that vary?
Omg Darryl, you’re not kidding!! I’ve been going to the dive shop more often now and not to mention pellet consumption lol. I have never in my life shot so many rounds in such a short period of time!! This is really an exciting well made gun.
Being Chinese made, I fill it up to 3,200 psi, I am not comfortable in filling it up any higher (yet) if you know what I mean. I want to get use to it first and really break it in ;).
Since it has no gauge to meter what’s in the air tube, I’m guessing I use up the air down to 2,000 psi. There’s a different sound once it starts filling up then you could see the reg gauge move.
Damit Darryl :), now you got me curious. I’ll do the water test. How many shots do you want me to fire?
Juanch! That’s actually quite an update. I’m glad to read your satisfaction. Also you shoot at the same distance I have available. It’s rare I get the use of a 50-yard area, and even more so for 100 yards. If you’re satisfied, then no need to shoot pellets into a bucket of water. But it would be interesting to see if the rifling marks are consistent from pellet to pellet with no other signs of contact on the head or skirt. I’m on ly speculating anyway. So when I can afford on I’ll pick up a K1 and see how it performs for me. BTW can you tell me what fill bar you are using and what bar you end at? I imagine you’re going through some air to have shot so many pellets. Sounds like you’re having fun! :biggrinn:
take care,
Darryl
Hi Darryl, how’s it going! Okay, from my last post, I went back up to the cabin @ 8,000′. It was super cold. This time I shot the JSB’s 34 grain at 50 yards and got an average of 3/4″ groups. What a beautiful pellet! This bullpup is super accurate @ 25 yards (this is where I do most of my shooting) 4 shots hole in one, dime size rapid fire with both, the JSB 18 and 34 grain. When I expell all 19 rounds at once, I get quarter size qroups except for some fliers here and there or it could be, I flinched LOL.
I’ve asked Donny to quite it down beacause it is loud when you crank up the power.
I feel so embarrassed, as Cricket suggested, I still have to post my own review of the Huben. I have been so busy with work and shooting the Huben (plus my other crazy hobbies) that I have been obsessed with the Huben lol. I have shot over 2,500 pellets so far.
I will shoot the pellets in a bucket of water sometime this week and post pictures for you. Let me know if there is anything else you need!
hello Juanch,
It seems you and others have the same issue with the Huben K1’s accuracy. From having seen videos of how to reinstall the Huben barrel and thinking of the accuracy issues with guns that have not been disassembled, I’m curious about whether or not the barrels were installed incorrectly at the factory. I understand that the procedure requires careful alignment of the barrel to the magazine. Here is the video I got that information from ( you can jump ahead to near the 13-minute mark to hear the instructions on refitting the barrel) :https://www.youtube.com/watch?v=htckp125XkU
My point is this: with such an exact requirement for installing and aligning the barrel, I can see where there might be a high-percentage chance for error in the installation, and so maybe clipping of pellets that don’t really show up until reaching farther out (like 50 yards). Also, it’s possible the manufacturing of the action might out of specification with regard to the magazine turning slightly out of alignment (somehow) just enough to allow a repeatable error which shows up in the erratic groups I’ve seen posted. Also, on another site the recent DBOI posted for the importer gives me pause with regard to owning the Huben K1. From what I can gather, every other thing about the gun is favorably viewed, except the guns can’t consistently group to airguns accuracy expectations accepted on this site. That’s just too bad. But I hope your gun turns out to be a shooter. The brand can use some good news.
Darryl
PS have you shot a pellet into a bucket of water then retrieved and looked at it for damage?
Yes, that’s a great idea Cricket. Thank you for the suggestion!
Interesting, you should start your own thread where you post your experience with the gun. And just update it when you have time, i would Read it.
Mike at Mrod is a great guy. Alsways takes the time to answer my idiotic question lol. Sometimes it may take time but I’m patient ;).
Please make a video and post pics. If you film yourself shooting a Target at 50 then great. Otherwise no One is going to believe you..
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Lol. Yes, you guys are right!! I should but I have a little problem with 50 yards. Here at home I can only stretch it out to 25 yards and it’s accurate. Last weekend, I went up to the mountains @ 8,000 feet and I get like 4 to 2 inch groups, what the heck is going on?? Played around with the regulator and speed but no go. Went back home to clean the barrel and it was filthy as hell.
I ordered a few tins of the JSB 34 grain Beast and will try it out. You have to be very careful (in my case) loading the JSB’s 18.1. The JSB’s are soft and it bends the skirts. If you go below 100 bar on the regulator, it won’t cycle and dumps the air slowly. You have to rotate the mag back so it stops. I’m learning as I go lol. I’m having so much fun I don’t realize I’m off the reg lol.
Mike at Mrod is a great guy. Alsways takes the time to answer my idiotic question lol. Sometimes it may take time but I’m patient ;).
Please make a video and post pics. If you film yourself shooting a Target at 50 then great. Otherwise no One is going to believe you..
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Do they look okay to you guys? I’ll do the water test soon :).
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