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Thread: Velocity question

  1. #1

    Velocity question

    I have tried looking through my balstics charts and reloading manuals but not found The answer to this.

    What is the minimum velocity needed to achieve stability in the following rounds?

    .224 80grain ballistic tip fired from a 22 7/16~570mm barrel with a 1 in 10 twist?

    And.

    .308 150 grain ballistic tip fired from a 22 7/16~570mm barrel with a 1 in 11 twist?

    I have got plenty of tables and manuals including most of the bullet manuals and they all give the velocitys achieved with stated loads but I can't see where the minmum velocitys for in flight stability.

    This is for information only please and to improve my understanding Of this fascinating subject.

    Thanks lads.

  2. #2
    all you need to do is plug the figures into this online calculator..

    http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi

  3. #3
    That works a treat. Thank you saved to bookmark now.

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