The accuracy problem of Huben k1 ?

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Dano46

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However, I`m still shooting better groups with the Huma regulated SPA M10 with the same JSB 18,13 grainers with the same (approx.) 930 fps speed. My Huben is one of the newest Generation (V3 !!!!).

The Huben begans to shoots like a shotgun after I cleaned the barrel the first time. There was a lot of dirt inside … But why it was shooting better groups with (original) dirt barrel ????????

Same effect with my FX Impact. After cleaning the first time, the groups went bad.

And I also think the distance in this Video is max. 45 meters.
 
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BeemanR7

This is the answer for those who are skeptical about its accuracy.
Click to expand...

OK. Now I understand. I didn't know that there was any skepticism about it. I'd like to see more reviews of the K1, particularly the .25 caliber version that recently came out. I am really impressed with the Huben K1 and I'd like to have one. I just need to learn more about this gun first.

Thanks for the video. Wish I could speak Spanish.
 
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However, I`m still shooting better groups with the Huma regulated SPA M10 with the same JSB 18,13 grainers with the same (approx.) 930 fps speed. My Huben is one of the newest Generation (V3 !!!!).

The Huben begans to shoots like a shotgun after I cleaned the barrel the first time. There was a lot of dirt inside … But why it was shooting better groups with (original) dirt barrel ????????

Same effect with my FX Impact. After cleaning the first time, the groups went bad.

And I also think the distance in this Video is max. 45 meters.
Click to expand...

EVERY barrel needs to be leaded up. When you clean an air gun barrel, there isn't a lot if any lead build up but you'll have to waste 10-20 shots, then try to zero.

My Sumatra was DEAD on, 1/4" groups at 32 yards with no rest but wobbly porch rail. I cleaned it, and way off. A few shots and it started to come back to original zero.

When you try different pellets, slugs, bullets in firearms, 3 things novices do. Not saying you're a novice. But many change their rest position. Even if free floated barrel. You slide forestock up or down rest bag, mechanical, whatever, different pressure, different harmonics. More commonly is many let their barrel heat up, and sighting in should be for cold bore shots. Then, if you can't shoot a fast 20, the barrel needs to be stress relieved or replaced. Depends on YOUR needs. I'm talking targets.

3rd, you need to run a dry patch through your air gun barrel between pellet changes. More or less antimony, tin, opposed to purer lead JSB will change POI.

Big changes in weights, even a head 0.002" bigger. Slugs versus pellet. I'm dead on at 150-200 with 25.43 & 33.95 JSB. Switch to 50 grain .253 slugs and 4 mil dots to the right at 200; but those same slugs will do 1/4" @ 50 off bags but need to be rezeroed.
 
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@JamesD, I assume also it`s something with changing rest position and different temperature. I was still able to shoot good groups with the Huben, but these groups I was shooting in the summer with some higher temperature outside. The last shooting with the Huben was in Dezember (after first time cleaning the barrel), with much colder temperatures and I was no more able to group under 1" on 55 yards.

However, due to the many different possibilities to set up guns like Huben or Impact, I agree you have also many possibilities to set up something wrong that was working before w/o Problems.

Sometimes I think I have to be a professional sniper to be able to understand the whole factors for getting some realy good groups.

Anyway, the K1 is an amazing airgun.
 
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