Huben GK1@100yards

[weevil]

After finding a sweet spot of very consistent speed with AVS 22-grain .223 dish slugs, I clamped my GK1 in the vice on my concrete table and shot at 100y in my backyard range.

See post #200 in this thread for the background info:

Huben - Huben pistol ammo choice.

Here is an other spin off thread for the Huben pistol where members can share what ammo they have found works good,....... or bad in their hand cannon.

www.airgunnation.com

After putting on an Optisan CP3-12, I sighted it in as well as I could using that unwieldy setup and then shot 8 slugs in windless conditions into a block of duct seal with a 3/4”sticker. The shots were from 260 bar and speeds ranged from 875-881, so very consistent.

It is just above freezing so the duct seal is firm and crumbly and not soaking up as well as usual. I removed the slugs from the big cluster and the isolated one on the right, so that you can see how well they expand:

Suffice to say, I’m blown away by this. It’s on a par with my Pantheras and such. Oh boy! I need a stock now.

 

[Ranchibi]

That's AMAZING! Absolutely fantastic slug group with your GK1 pistol! Yeah...definitely will make your rifles speechless....

 

[mike4406]

I think my .25 GK1 just obsoleted both my Leshiy 1 and 2 !!!

 

[JDGriz]

Fun fact: My account was created for the purpose of promoting the need for a good stock solution for the GK1. That was 80% of the motivation behind it. And that was weeks before I got the actual pistol.

 

[Nomadic Pirate 66]

WOW !!!... Hot Dang !

Careful tho, putting a pistol in a vice is a no no, you not a real pistol shooter and doesn't represent what a pistol can do

 

[weevil]

I shot another group - didn’t take a pic but about the same result, so no fluke! Went for a hike and thought about it. As some of you know, I’ve been dissing the slug and carbine ideas. I take it all back. I do still want a pistol only but I also have 22 and 25 K1 rifles and they don’t shoot slugs this well. That’s what has me thinking. I always thought it was the mechanism, shooting from a mag, that made the K1s less accurate. No doubt there’s issues with loose pellets and pellet damage in transition but slugs are solid and yet still only shoot 2moa at best from a vice clamped rifle. It’s not from a lack of tinkering and tuning - I’m pretty obsessive (in case you can’t tell). Now I’m thinking it’s the length/arrangement of the barrel/shroud. The barrel on the pistol is tensioned and therefore very rigid. So, yeah, this makes me want to replace the rifles with pistol carbines. But maybe I should try “fixing” one of the K1s.

In any case, hats off to AVS for those slugs. I’m gonna order a stack. .223 definitely works . I mentioned to wimpanzee via PM that the varmint knockers were occasionally falling in to the barrel and locking up the magazine, forcing me to shoot until the mag was empty. That hasnt happened with the AVS at all. I’ll also advise, based on the ongoing testing, that the 22 grain is the most useful intersection of power and accuracy. You can get a full mag at 290-170bar that fits a symmetric curve of speed from 850 to 880peak and back to 850. Just have to set the power adjuster to make 880fps for shots taken at 210-230bar.

 

[weevil]

WOW !!!... Hot Dang !

Careful tho, putting a pistol in a vice is a no no, you not a real pistol shooter and doesn't represent what a pistol can do

LOL. But actually, I appreciate that line of thought and would like to become more pistol proficient. I coach biathlon here and that is open sights and off hand. But, we clamp all guns at the start of the season and bring the students in to show them that they can never blame their tool. Confidence in the tool makes them better in the long run. That reminds me, I have 7 of them to tune

 

[Nomadic Pirate 66]

I was thinking about that the last couple days, Huben has now a Pup and a pistol

A nice addition would be a 15"-17" barrel folding stock and wood stock Carbine for those that don't like pups.

 

[Str8tshooter]

Mindblown, I was happy with my groups now this.

 

[Ezana4CE]

This is nuts!! I'd never imagined that this sort of accuracy could be possible at 100 yards with the GK1 pistol. Manny's gotta be goin ape over there reading this.

 

[weevil]

I spent 18months trying to get an M3 compact to shoot a group of 22-grain slugs that small at 100y and a little pistol put it to shame on its first try.

 

[MrP]

I’m waiting on the next shipment of these… placed a pre-order.

Never really considered spending over $1000 on an airgun before, but when this came out I knew I would end up getting one. congratulations to Gregor, who saw the potential in this platform.

 

[Airgun561]

I’m waiting on the next shipment of these… placed a pre-order.

Never really considered spending over $1000 on an airgun before, but when this came out I knew I would end up getting one. congratulations to Gregor, who saw the potential in this platform.

It’s worth every penny IMO..Already waiting for the .357 version

 

[Barri_40]

Buenas tardes.
Sabe alguien si se pueden conseguir esas balas AVS en Europa, los grupos son espectaculares.
Un saludo.

 

[Nutcracker]

It is the first PCP pistol worthy of a stock. IMHO of course, I knew the first week I had mine & was eliminating groundhogs some at 50 yards, it was not a slouch. or a lobber.

 

[weevil]

Buenas tardes.
Sabe alguien si se pueden conseguir esas balas AVS en Europa, los grupos son espectaculares.
Un saludo.

Un altre cartell va dir que estaven considerant aquesta opció, així que si us plau, escriviu i pregunteu.

 

[Mr.H]

I'm bringing this back up for a couple questions to the OP. Are you still happy with the GK1? And out of curiosity, did you ever post pictures of targets with pellets, not slugs. I think since your original post in '23. the JSB Redesign Light 20.83 gr were not available. Those are pretty close in weight to your 22 gr slugs you used. Thanks.

 

[Barri_40]

Los perdigones JSB Moster Light de 20,83 son los más precisos en GK1 v1 cal 22, pero no tiene nada que ver con balas de 22 grains, yo también disparo balas cal 222 y 223 de 23 y 24 grains, con la precisión de 10 de los diábolos de 20.83 no quiero las balas.

 

[Mr.H]

Los perdigones JSB Moster Light de 20,83 son los más precisos en GK1 v1 cal 22, pero no tiene nada que ver con balas de 22 grains, yo también disparo balas cal 222 y 223 de 23 y 24 grains, con la precisión de 10 de los diábolos de 20.83 no quiero las balas.

Thank you!

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The 20.83 JSB Monster Light pellets are the most accurate in GK1 v1 cal 22, but it has nothing to do with 22 grain bullets, I also shoot 222 and 223 cal bullets of 23 and 24 grains, with the accuracy of 10 of the 20.83 pellets I don't want the bullets.



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[steve-l]

LOL. But actually, I appreciate that line of thought and would like to become more pistol proficient. I coach biathlon here and that is open sights and off hand. But, we clamp all guns at the start of the season and bring the students in to show them that they can never blame their tool. Confidence in the tool makes them better in the long run. That reminds me, I have 7 of them to tune

You actually accomplish nothing by shooting a pistol from a vice. Now a Ransom rest is a different story, it allows some recoil. A vice does not. All pistols support the pistol mass below the barrel line. When fired the barrel rises in response. After sighting in a pistol and then placing a laser in the barrel. Then observe the impact point of the laser in comparison to your group center and note the difference. It will be substantial. Your concept is however spot on, teaching weapon confidence The student must believe misses are his alone not the equipment in order to improve.