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RPM formula

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Unread 08-24-2002, 02:15 PM
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RPM formula

What is the formula for caluculating RPM for a certain twist and velocity?
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    Unread 08-24-2002, 09:00 PM
    Gold Member
    Join Date: May 2001
    Posts: 923
    Re: RPM formula

    Divide the number 12 by the twist in inches, take that answer, and multiply by the muzzle velocity (fps), and multiply by 60.

    The answer is in "RPM"

    Here, kitty kitty kitty.

    LRH member #23
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    Unread 08-25-2002, 12:48 PM
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    Re: RPM formula

    Thanks Cat
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