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Kral puncher breaker bulpup.

Discussion in 'Anything Airgun Related' started by spcook, May 2, 2016.

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  1. JSB888

    JSB888 Keyboard Hero

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    That was straight out of the box. I got 110 before a dramatic drop.
    Hoping to get it back together today and run it over the chrono.


    .
     
  2. Jim-in-Darwen

    Jim-in-Darwen Donator

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    Mine is the 22 and only got a proper chance to test it today as I had been waiting for a Best fittings connector for the fill probe.
    I got some strange results. Having sighted the scope in at 30 yards I found I had to give it 1 mill dot at a 45 yard zero box but that then went to 1.5 mill dots after about 20 shots and then after a further few shots returned to 1mill dot. When the power dropped off the gauge was still showing over 100bar.
    There is a very noticeable twang when it is fired but I suspect it is just seems that bad because the sound is close to the ear when shooting.
    On the second refill I had a problem getting the probe to seal. On inspection one of the O rings had a tiny sliver of rubber hanging from it. A touch more silicon grease and all now seems to be ok.
    Mine is only doing 14 Joules which is 10.33ftlbs with JSB Jumbo 5.52 or 5.51mm
    I am going to give the barrel a good clean which I failed to do before using and see how it goes.

    Jim
     
  3. Wedwivwage

    Wedwivwage Posting Addict

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    I can't get my eyeline right unless I remove the cheek piece. I've got high mounts on there as well (Panorama scope) might have to get some risers.
     
  4. Jim-in-Darwen

    Jim-in-Darwen Donator

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    For anyone else experiencing lower than expected ftlbs - I have contacted the importers of the Kral Puncher/Breaker and the Managing Director Gill Peters sent me this email. This relates to the 22.
    Jim
     
  5. JSB888

    JSB888 Keyboard Hero

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    That's a bloody heavy pellet for sub 12, it'll have a trajectory a half a brick!! I only use that weight in my .25!


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  6. Jim-in-Darwen

    Jim-in-Darwen Donator

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  7. JSB888

    JSB888 Keyboard Hero

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    I'd be happy with about 11fpe in .22, because at least you get the energy retention.

    PM me if you want to know how to strip it and have a tinker.


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  8. JSB888

    JSB888 Keyboard Hero

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    If anyone know how to get one end or the other off the cylinder, let me know please. I want to fit a depinger.


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  9. Jim-in-Darwen

    Jim-in-Darwen Donator

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    I might just do that although I do have a well earned reputation for making things worse. :)
    As they are all set up by the importer (I think they come in at FAC levels) and they use that very heavy pellet do it then I reckon there are going to be some not very happy owners.
    Exact Jumbo Heavy are about 18grains so even heavier than those.

    Jim
     
  10. c96

    c96 Donator

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    going to pick it up latter and typically the weather turnded worse. Never mind.:eek::up:
     
  11. biotaw1

    biotaw1 Engaging Member

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    Here's the out of the box shot string I did using JSB Express 4.52, alongside one from my CZ200 using the same pellets:

    [​IMG]

    CZ has far better shot to shot consistency but good shot count from the Kral. The last 3 shots that look like a sudden drop off was me running out of Express and using normal exacts. The power stayed almost identical so this didn't represent the beginning of a drop off (shouldn't really have included them!).

    I'm really no expert on this at all and I only have the experience of tuning the CZ (so this should be treated with caution!) but it looks to me like the Kral could use a bigger transfer port with a lighter hammer spring.
     
    Last edited: Jun 4, 2016
  12. Tron

    Tron Donator

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    On my puncher looks like it would be easier to remove the valve ass from the cylinder end nearest the receiver because the fill end dosent have much of a gripping area to hold to unscrew the valve.
     
  13. JSB888

    JSB888 Keyboard Hero

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    Cheers mate, just need to blast all the air out and dig out the strap wrench :)


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  14. c96

    c96 Donator

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    Well picked it up and I am very pleased with it, allso got a nice hard case for it from Will at Woodfeild GCP, thanks Will for a top deal again.:up::)
     
  15. r10hunter

    r10hunter Honorary Member

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    Excellent enjoy it !!!
     
  16. shauny

    shauny Top Poster

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    have fun with it dai.did you decide on a cammo dip yet?
     
  17. c96

    c96 Donator

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    still waiting for blade to get back to me, I do like the Flecktorn( have a cammo gore tex smock in that pattern.:up::) or maybe Jack Pyke English Oak.
     
    Last edited: Jun 5, 2016
  18. Chris-C

    Chris-C Engaging Member

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    English oak as well for me. Any news?
     
  19. c96

    c96 Donator

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    sorry nothing:confused:
     
  20. j rayner

    j rayner Engaging Member

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    ceep it coming lads....accuracy wise
     
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