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Kral puncher breaker bulpup.

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

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  1. Riddmeister

    Riddmeister Airgun Nut

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    I"m considering the Breaker along with the Ultra as an economically priced sub 12 pcp in .22 or perhaps .25 as a short to medium range gun for elevated shots and farmyards where you don't want FAC power. The Kral with its power adjuster you could use in barns too.
     
  2. kenhawker

    kenhawker Honorary Member

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    Ok chaps bit of an update.
    Keeping the shortened rapid 7 spring fitted.
    I've noticed that there is still a noticeable ping.
    The one way to stop it causing a harmonic is to fit a depinger as we know.
    But this wouldn't fix the problem. We had the same problem with the Smk p10. The harmonic was started by the hammer slap. This was stopped by fitting a rubber pad to the valve face. Then turning up the power to compensate the loss of stroke on the valve stem. The use of a chronograph is paramount.
    I will be moding mine later an I will add the results here.
     
  3. kenhawker

    kenhawker Honorary Member

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    Well the rubber pad worked. It's solved the problem of the dreaded twang.
     
  4. j rayner

    j rayner Engaging Member

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    nice one fella
     
  5. Jasonagoo

    Jasonagoo Well-Known Member

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    So I bought one, but forgot to buy some high picatinny mounts (now ordered), so I thought I'd take a few minutes to modify the stock.

    I tool the stock off, sanded down the finger knurling, as I have big fingers and they didn't line up. Then I sanded off the horrible lacquer, and rubbed a bit of oil on. Still needs a better sanding finish and a rub with more oil and steel wool, but it's a definite improvement. Will post a photo when she's done, but here's a work in progress.

    [​IMG]


    I definitely think I'll be tuning the internals. That twang is a bit annoying.

    Jason X
     
  6. j rayner

    j rayner Engaging Member

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    nice one
     
  7. Jim-in-Darwen

    Jim-in-Darwen Donator

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    Those that have them will have seen that the bolt/pellet probe has no O ring on it meaning the barrel has an internal O ring that the probe butts up to. In the box with the gun come the magazines, allan keys and a set of O rings. One of those O rings looks to be a likely candidate for being a spare barrel seal O ring.
    However if as we are told there are three anti tamper devices, one of which stops barrel removal is there any way that that particular O ring could be replaced or even removed? Why would they include the O ring and yet stop it's replacement unless it is a standard set and is there prior to the AT being inserted.
    Further to that why on earth have an AT to stop barrel removal? :confused:

    Jim
     
  8. kenhawker

    kenhawker Honorary Member

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    They must expect us to use dental pics Jim.
    Does anyone know the size of the helicoil used on these as mine died. I need it to lock the adjuster into place.
     
    Last edited: Jul 27, 2016
  9. Jasonagoo

    Jasonagoo Well-Known Member

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    I'll take mine out tomorrow and check it with my calipers for you.

    Reference your rubber pad mod, does it have to go on the valve or can it be fitted to the hammer?

    JX
     
  10. Jasonagoo

    Jasonagoo Well-Known Member

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    Hope these help. Uses a 2mm Allen Key.

    JX

    [​IMG][​IMG]
     
  11. kenhawker

    kenhawker Honorary Member

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    Take the air tube off and cut to fit the valve face Jase. Cheers for the measurements.
     
  12. titeuf007

    titeuf007 Active Member

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    someone could post pictures about the accuracy of this great rifle?
    i have seen great video about the accuracy and it seem very well(if the shooter is good and with the great pellets)
    i don t think it s worst than benjamain pcp which is the same price range..
    i come from belgium and i just to buy one in FAC version(no law restriction here)
    mine is synthetic version
    i have already a fx 500 and a bsa bucanner se which are very good gun!! my bsa cost 3 less than my fx and i can say you that my fx is not 3 times better than my bsa...only a better trigger and no plastic part that all!!
    so if this kral is in the same way, it could be a beast! i take mine with the regulator for 530euro fdpin...my fx 500 regulated was 1300 fdpin(so almot 3 time expansive)

    sorry for my english..
    apparently (it s what royal si has said me, it s almost 100% evanix raimstorm 2 design with few little thing different like the magazine)
     
  13. biotaw1

    biotaw1 Engaging Member

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    I haven't been at all impressed with the accuracy of mine but some people have so I think it depends if you're unlucky and get a bad one. Absolute best group at 20 yards with mine is now about 15mm at 20 yards but groups like that are very hard to achieve and normally they're much bigger. To put it in context, my CZ or HW97 will do 7 and 8 mm groups at that range without even trying that hard if shooting off a rest. If you don't concentrate 100% with the Kral you'll be looking at huge groups so mine seems to have 2 problems: 1) it's very hard to shoot well and 2) even when you do shoot well the groups are still pretty poor and would only get worse if I extended the range. I've done 50 yards groups with my other rifles better than my Kral does at 20 yards.

    All that said, loads of people are saying they're good so I guess I have a bad one. Small groups are CZ, big groups are Kral.

    [​IMG][​IMG]
     
    Last edited: Jul 30, 2016
  14. Wedwivwage

    Wedwivwage Posting Addict

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    This is about the best I've done with mine. Just over 20 yards. I have been shooting it more accurately lately after I got a scope bubble. I was suprised at how much I was tilting it!
    p.s. I am not the best of shots.
     
  15. Jim-in-Darwen

    Jim-in-Darwen Donator

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    Just a suggestion but I find those targets where you have a large black area and just fine lines separating the rings are difficult.
    Unless you are using very high magnification it is a bit of a guessing game determining when the cross hairs are in the centre of that black mass. Try with just a sheet of white card and a black dot of about 5mm dia as target. Nothing else but the black dot on the card.
    I bet your groups are tighter.

    Jim
     
  16. titeuf007

    titeuf007 Active Member

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    thanks
    biotaw i have seen you bad comments about this pcp but perhaps you have a bad one(you can have this kind of problem with all high end brand..)
    did you try to put pellet without use the magazine(one by one?)
    magazine could be the problem...what kind of pellet did you use?
     
  17. cybernet69

    cybernet69 Banned

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    There are over 16,000 of them in potentially circulation that have a very dodgy barrel.
     
  18. Jasonagoo

    Jasonagoo Well-Known Member

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    Thanks Ken.

    What rubber did you use? Also, do you have a link to the FAC spring you used? Can I buy one if I don't have a FAC?

    JX
     
  19. kenhawker

    kenhawker Honorary Member

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    EBay item number 222195875233
    just cut them to size. I used JB weld to glue it into place. But superglue will work to but use it sparingly Dont go nuts. John knibbs for the spring. But I've got my original back in mine with 2 coils removedas my transfer port is now 2mm.
     
    Last edited: Jul 31, 2016
  20. biotaw1

    biotaw1 Engaging Member

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    Yep, tried with and without magazine...no difference in accuracy although the POI seems to shift. I've tried lots of pellets, at least 10 different types without much success.
     
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