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Zbroia Kozak 177 arrived today

Forums PCP Airguns PCP Airgun – Discussion Zbroia Kozak 177 arrived today

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    RAMJET66
    Participant
    Member
    United States
    Accuracy: +4

    thanks , Shutik, very interested in your results..

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    muffin
    Participant
    Member
    Accuracy: +0

    Hi
    I am new to this forum so please forgive me if this has already cropped up, I am receiving  KOZACK next week, I have been reading about hammer spring adjustment, I live in the uk were the limit is 12fbs is this the setting for all countries or is it set back for the uk ?
    What would you expect from tweaking the gun in usa say.

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    muffin
    Participant
    Member
    Accuracy: +0

    hi
    I cannot edit post above, I have been looking at muzzle velocities it looks like my .177 will be around 700fps with the 10.5gr crosman premier at 12fbs I will let you know.
    thanks

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    shutik
    Participant
    Member
    United States
    Accuracy: +10

    UK version is already adjusted to 12 ft/lb, which means lower regulated pressure and weaker hammer spring.

    I would not tweak anything, just shoot.

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    muffin
    Participant
    Member
    Accuracy: +0

    ok
    thanks I thought all guns would be the same
    gm

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    shutik
    Participant
    Member
    United States
    Accuracy: +10

    I’ve tested Nielsen 15.5 grain slugs out of my Kozak at 50 yards and was very impressed with the results.

    That one flyer was me using wrong hold over point.

    This is 6 shots all in same hole.

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    jarmstrong
    Participant
    Member
    United States
    Accuracy: +20

    Vasyl, that is  an awesome group. 😎
    Now I have to order some .22 slugs just to see how they will work for me.
    ​I have no need, for yard pesting, but DANG , I like playing with this rifle, so
    Nielson slugs , here I come 😀

     

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    Hubertus
    Participant
    Member
    Austria
    Accuracy: +11

    Can someone tell me the inner diameter from the shroud ?

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    shutik
    Participant
    Member
    United States
    Accuracy: +10

    I measured it at 19.4 mm or .762 inches

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    Deleted Account
    Accuracy: +65

    Those are great results. Will you be using it for Hunter or Open?

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    shutik
    Participant
    Member
    United States
    Accuracy: +10

    Open, i will try it with slugs this coming Sunday monster match.

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    airgunmonkey
    Participant
    Member
    Accuracy: +4

    Shutik, I see that the slugs works well on your rifle, I also asked a friend of my to cast some for me.
    I started making a complete new shroud and end caps with a 1/2″ UNF threads to fit a external silencer, also a larger diameter shroud tube (25mm OD) for more internal volume, here are some pics, not finished yet, I still have to tap the front end cap with a 12X1mm to fit on the barrel, drill hole on the end cap shaft for the blowback in the shroud and thread the tube and the back end cap, then anodize the parts.


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    airgunmonkey
    Participant
    Member
    Accuracy: +4

    Today I had a little time and tapped the thread on the front end cap, hopefully tomorrow I can finish the rest and assemble it and test it.

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    Hubertus
    Participant
    Member
    Austria
    Accuracy: +11

    received my kozak today.
    is a manual for trigger adjustment available ?

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    RAMJET66
    Participant
    Member
    United States
    Accuracy: +4

    “airgunmonkey”Today I had a little time and tapped the thread on the front end cap, hopefully tomorrow I can finish the rest and assemble it and test it.    ……..looks great so far , will you be able to use the factory shroud with it ?

     

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    RAMJET66
    Participant
    Member
    United States
    Accuracy: +4

    sorry AGM. I didn’t see the earlier pics you posted , I was going to send my part to Donnyfl to get it tapped for an adapter& hope I can use the stock tube..

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    Hubertus
    Participant
    Member
    Austria
    Accuracy: +11

    Hey, about the trigger adjustments.

    is it correct, that you can adjust the weight und sear engagement ?
    and maybe with adjustment to the linkage the lenght of the first tage ?

    how can i remove the weaver rail ? i removed all screws on top of it but its still not moving ?
    i need to look inside the barrel.

    is the regulator inside the airtube ? it seems that my regulator is set around 95-100bar.
    it could be lower because im limited in energy levels 🙁

    thanks!!

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    airgunmonkey
    Participant
    Member
    Accuracy: +4

    Ramjet66,  I decided not to use the original shroud as it has a very narrow inside diameter so I am using a 25mm OD tube for it with a ID of 22.5 mm, that gives a slightly more volume, the stock tube has a 19.4mm ID. I tryed the adaptor just with a silencer and quiet down a lot (it is backyard friendly) but still not for my liking (I like whisper quiet), will try again when the complete kit is ready, now I just need to thread the tube and the end caps, drill a hole on the shaft of the front adaptor and make an internal baffle for the shroud but I think I will need a larger diameter silencer as the ones I have are 30mm OD with a 27mm ID and 127mm long, I am thinking machine a 35mm OD with a 32mm ID for a bit of more expansion volume.

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    airgunmonkey
    Participant
    Member
    Accuracy: +4

    “Hubertus”Hey, about the trigger adjustments.
    is it correct, that you can adjust the weight und sear engagement ?
    and maybe with adjustment to the linkage the lenght of the first tage ?
    how can i remove the weaver rail ? i removed all screws on top of it but its still not moving ?
    i need to look inside the barrel.
    is the regulator inside the airtube ? it seems that my regulator is set around 95-100bar.
    it could be lower because im limited in energy levels 🙁
    thanks!!

    
Sorry but I havent tyed to adjust the trigger as I like the factory set up, I thought that the reg was set at 150bar, do you have a 12ftp rifle?

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    Hubertus
    Participant
    Member
    Austria
    Accuracy: +11

    it is really sad… really. i got 5.5 ftp ;(

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