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  1. #1
    Member 300_BLK's Avatar
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    BRNO 601 questions

    Hi Guys,

    I managed to pick up a decent example of a ZKK BRNO 601 in 243 win manufactured in 1974.

    Barrel has been re-crowned and is about a 8/10 with some old pitting.

    The end that was cut off is knackered and it is grouping between 1"-4" at 100m with three types of ammo.

    It has the set trigger fitted which is lovely but I have always wanted a 308 or a 358 win.

    Does anyone know what the thread is on the actions?

    I'm trying to work out if I can find a second hand barrel that can be screwed on from a tikka, mauser etc to save some coin.

    Cheers,

    F.

  2. #2
    P38
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    @300_BLK

    Doesn't answer your question but here's the owners manual for the ZKK series of BRNO Rifles

    http://stevespages.com/pdf/zkk_600-601-602.pdf

    However from memory I believe the thread size for the barrel is 28mm x 2mm but can't confirm this.

    Cheers
    Pete
    Last edited by P38; 21-04-2017 at 04:51 PM.
    Arguing with an Engineer is like Wrestling a Pig in Mud.

    After awhile you realise the Pig loves it.

  3. #3
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    I believe they are the same as CZ550 rifles.
    I had a ZKK601 in 223, and it came rebarrelled but don't know who did it.
    Gunworks trimmed and threaded it for me though.

  4. #4
    Member 300_BLK's Avatar
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    Thanks guys, being a commercial mauser action I assumed it would be the same thread as a large ring mauser?

    But I still can't find out. Might just ask for a quote from a few places. Cheers guys

  5. #5
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    My Brno fox was around 1" diameter with a 1.25 mm thread pitch, so there are chances that the 601 could be a metric size of some sort as well.

  6. #6
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    Not much on the interweb but supposedly the 600/601/602 all share the same thread of 28x2. Not quite the same as a large ring . .

  7. #7
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    Lothar Walther do a prefix barrel for the ZKK if that is any help?


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  8. #8
    Member 300_BLK's Avatar
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    Thanks for the replies guys just need to get it away to the gunsmith to check.

  9. #9
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    Quote Originally Posted by P38 View Post
    @300_BLK

    Doesn't answer your question but here's the owners manual for the ZKK series of BRNO Rifles

    http://stevespages.com/pdf/zkk_600-601-602.pdf

    However from memory I believe the thread size for the barrel is 28mm x 2mm but can't confirm this.

    Cheers
    Pete
    Thanks for that link, I never knew I could adjust the trigger on my 308, though I have only had it for 25 years!

  10. #10
    P38
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    Quote Originally Posted by Cigar View Post
    Thanks for that link, I never knew I could adjust the trigger on my 308, though I have only had it for 25 years!
    @Cigar

    Your welcome

    All my 601svhave had lovely triggers once adjusted.

    Cheers
    Pete
    Arguing with an Engineer is like Wrestling a Pig in Mud.

    After awhile you realise the Pig loves it.

  11. #11
    Member 300_BLK's Avatar
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    Do you know where you can get the scope bases for Brno?

  12. #12
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    Quote Originally Posted by 300_BLK View Post
    Do you know where you can get the scope bases for Brno?
    Burris make the best ones imho. You have to grind off the recoil lug. They make them for the CZ550 and the CZ452 and one of these two fits the dovetail on the 601. The optics zone is the cheapest place to buy them from.

  13. #13
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    All CZ 550 rings will fit. I have a set of hilver rings I'd sell.

  14. #14
    P38
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    The Burris Zee rings also fit the dovetail

    Cheers
    Pete
    Arguing with an Engineer is like Wrestling a Pig in Mud.

    After awhile you realise the Pig loves it.

  15. #15
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    @P38 do you know the twist rate on the factory 243 barrels?

 

 

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