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Thread: Kral 5.5mm barrel and fill probe

  1. #1
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    Default Kral 5.5mm barrel and fill probe

    Good day

    i have been searching the net high and low with no luck . i am looking for the twist rate for the kral barrels ? Would there be anyone that knows what this is and is it possible to purchase longer barrels .

    The second part of the of the post is i would like to know if there is any way to stop the squeal from the fill probe when filling the maxi ?
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  2. #2
    Sharp Shooter
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    Barrel - Kral's longest barrel is a 58cm barrel. Pellet-Guns.com should be able to help or get Airvolution to make you one as long as you need.

    Squealing sound - fill slower.

    Twist rate - No idea unfortunately.
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  3. #3
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    thanks for the feed back i only seem to get the squeal fir the last 50-60 bar of the fill . i am filling rather slow 5-6 min from 120 -200 so as to not have the heat exchange tack place in the tube

    as for the twist rate is there a way one can work this out of measure it ?
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  4. #4
    Protea FT Team '18/'19
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    Don't worry about the twist rate, if you replace the barrel do it with a quality barrel like a Lothar Walther or a CZ.
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  5. #5
    Marksman
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    Have a look at this. It might assist in determining the twist rate.

    Gunsmithing - How to Determine the Rate of Twist in a Rifle Barrel - YouTube
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