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Thread: Headspace variation after sizing

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  1. 31-05-2018, 11:17 PM #7
    Bagheera
    Bagheera is offline
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    Mar 2012
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    Waikato
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    Using a Co-Ax press, Redding FL die, Hornady comparator and anvil, I got 6mmPPC cases at .330" dia on shoulder measuring from 1.1555 to 1.1565" (5 cases)
    For the 7mm08 (Redding FL) at 0.400" dia, 5 cases ranged from 1.6280 to 1.6285". These were a bit tight to chamber. Before sizing they had been 1.6265 to 1.6275 so they were getting longer when sized !
    Then I shortened the length and got 5 ranging from 1.621 to 1.622. This 0.006" made them chamber nice and easy.

    So a total range of 0.001" seems achievable on a good bench press with an average operator.
    YosemiteSam likes this.
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