Huben My GK1

[zx10wall]

Got my GK1 in the other day. Been playing with it since last eve. Killer pistol. I had accessories waiting for it to deliver. @M0ist0ne makes some goodies that I’m utilizing. The red dot mount & load gate are very well make 3-D printed pieces. The load gate allows for 3 projectiles to be loaded and doesn’t require you to force them in, just drop ‘em. It’s finished off nicely with a magnet that snaps it back in the closed position. The red dot mount is precisely made. Love it! Also, a fill port plug that keeps the dust out

Dialed it in for 28-30 FP with .22 18.13 JSBs. Filled to 300 bar and shot a sting:

Created: 11/11/23 02:38 PM
Description: .22 Huben GK1
Notes 1: 300 bar fill
Notes 2:
Distance to Chrono(FT): 1.00
Ballistic Coefficient: .040
Bullet Weight(gr): 18.13
Temp: N/A °F
BP: N/A inHg
Altitude: 150.00
# FPS FT-LBS PF
35 822 27.21 14.90
34 826 27.47 14.98
33 836 28.14 15.16
32 846 28.82 15.34
31 853 29.30 15.46
30 861 29.85 15.61
29 864 30.06 15.66
28 868 30.34 15.74
27 877 30.97 15.90
26 888 31.75 16.10
25 851 29.16 15.43
24 877 30.97 15.90
23 866 30.20 15.70
22 868 30.34 15.74
21 859 29.71 15.57
20 856 29.50 15.52
19 851 29.16 15.43
18 844 28.68 15.30
17 844 28.68 15.30
16 842 28.55 15.27
15 833 27.94 15.10
14 833 27.94 15.10
13 837 28.21 15.17
12 835 28.07 15.14
11 829 27.67 15.03
10 835 28.07 15.14
9 824 27.34 14.94
8 826 27.47 14.98
7 832 27.87 15.08
6 830 27.74 15.05
5 836 28.14 15.16
4 835 28.07 15.14
3 823 27.27 14.92
2 833 27.94 15.10
1 840 28.41 15.23
Average: 845.1 FPS
SD: 17.4 FPS
Min: 822 FPS
Max: 888 FPS
Spread: 66 FPS
Shot/sec: 0.1
True MV: 845 FPS

The Huggett tames the bark quite well. I was pleasantly surprised with accuracy as I got it about sighted in. Below are a pair of 5-shot groups (rested) from 25 yards (not 50)

This is a very fun and capable little pistola.

 

[Pale_Rider]

Man I don’t think Ron can stand a chance against you at Xtreme Pistol shooting anymore

Try the GTOs they shoot even better than the JSBs

 

[zx10wall]

Man I don’t think Ron can stand a chance against you at Xtreme Pistol shooting anymore

Try the GTOs they shoot even better than the JSBs

I edited above. I initially wrote 50 yards (dork) for groups but it was 25 yards.

What weight are the GTOs?

 

[Nomadic Pirate 66]

For a non regulated pistol that is a dang nice string and 35 shots to boot.

 

[longshot81]

Best PCP pistol ever made, and it's not even close with any of the competition. This thing is just a beast.

 

[Pale_Rider]

I edited above. I initially wrote 50 yards (dork) for groups but it was 25 yards.

What weight are the GTOs?

Lol still good groups for a “pistol sized” pistol with a red dot at that. Watch how those groups tighten up with GTOs. They weigh 12 gr

 

[Barri_40]

Estoy obteniendo buenos grupos a 27 metros con Air Arms de 18 granos, de media pulgada, también con el JSB slugs MK2, está pistola es increíblemente precisa con estas 2 municiones.
Saludos.

 

[weevil]

I edited above. I initially wrote 50 yards (dork) for groups but it was 25 yards.

What weight are the GTOs?

I find the JTS 18.1s are a bit more accurate than the JSB, but GTOs are in another league. The sweet spot seems to be 890-920 with GTOs.

 

[zx10wall]

Decided to do a bit more power and just focus on 19 shots which is a mag full. I mean, I’m reloading the mag, why not fill the reservoir as well. I figured a good fill to point as well. Here you go; from 245 bar fill:
Created: 11/16/23 05:34 PM
Description: .22 Huben GK1
Notes 1: 245 bar fill
Notes 2:
Distance to Chrono(FT): 1.00
Ballistic Coefficient: 0.040
Bullet Weight(gr): 18.13
Temp: N/A °F
BP: N/A inHg
Altitude: 150.00
# FPS FT-LBS PF
19 878 31.04 15.92
18 881 31.25 15.97
17 886 31.61 16.06
16 897 32.40 16.26
15 904 32.90 16.39
14 905 32.98 16.41
13 907 33.12 16.44
12 902 32.76 16.35
11 895 32.25 16.23
10 890 31.89 16.14
9 893 32.11 16.19
8 888 31.75 16.10
7 883 31.39 16.01
6 889 31.82 16.12
5 878 31.04 15.92
4 881 31.25 15.97
3 873 30.69 15.83
2 870 30.48 15.77
1 867 30.27 15.72
Average: 887.7 FPS
SD: 12.0 FPS
Min: 867 FPS
Max: 907 FPS
Spread: 40 FPS
Shot/sec: 0.1
True MV: 889 FPS

 

[Nomadic Pirate 66]

Fantastic, 19 shots at 30+ FPE from a 250 BAR fill,....and that string is so tight.

 

[airgunmike56]

Welcome to the madness of this crazy power from a air pistol, I agree with the 18.1 JTS shoot better than the JSB pellets , The GTOs are a little high $$ , But I ordered a tin just to check out all the hoopla on them.
Mike

 

[wimpanzee]

Try out some varmint knocker slugs, they shoot better for me than even the GTO's which shoot better than JSB 18's. I was hitting my 1" spinner at 50 yards about 4/5 times. Every other (larger) spinner EVERY time. They pack a much more satisfying smack at 50 yards than those GTO pellets do!

From a 300 bar fill, I get one full mag at 810-850fps (43fpe), with the 28.5gr .223 slugs.

 

[Mojo Aire]

Who need s a regulator? Impressive results. Imagine what we can get when the 350 bar and up compressors come out. It's like having a bigger tank free. I love my Gk1's!!!

 

[zx10wall]

I ordered the .22 21.53gr JTS semi-domed to try. Those look very promising.

 

[weevil]

Try out some varmint knocker slugs, they shoot better for me than even the GTO's which shoot better than JSB 18's. I was hitting my 1" spinner at 50 yards about 4/5 times. Every other (larger) spinner EVERY time. They pack a much more satisfying smack at 50 yards than those GTO pellets do!

From a 300 bar fill, I get one full mag at 810-850fps (43fpe), with the 28.5gr .223 slugs.

Thanks for the tip. I have ordered some. I’ve tried everything else, so why not!

 

[zx10wall]

Well, had to find out what it’s really doing for accuracy. I mounted a scope and put it on the bench. Tried JSB 18.13s and 15.89 Hades. Wow for semi auto pistol, this little guy rocksI’ll see the JTS 21.53gr semi-dome do next week.

Here’s (2) 5-shot groups with 18.13s at 25 yards:

And same for Hades: