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Thread: Ballistic Coefficient of JSB Exact Heavies

  1. #1
    Marksman
    The Guru

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    Default Ballistic Coefficient of JSB Exact Heavies

    Just tested these JSB 10.2 grain pellets.
    They are very accurate at these velocities

    1018fps at muzzle
    912 at 21yds
    BC 0.022 [I would have though they were better than this]

    Also tested Crosman Heavies 10.5 gr
    1000fps at muzzle
    916 at 21yds
    BC 0.025 [as in Chairgun]
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  2. #2
    Protea FT Team '08

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    How does this get worked out Guido?
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  3. #3
    Marksman
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    using Chairgun...it's an awesome piece of software which every airgunner should try out..

    see http://www.fotosoft.co.uk/chairgun
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