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Thread: Projectiles for a .223 with a 12 inch twist.

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  1. 25-10-2022, 06:32 PM #14
    grandpamac
    grandpamac is offline
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    Okawa Hawkes Bay
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    Quote Originally Posted by Oldbloke View Post
    You might find this of some use.

    https://bergerbullets.com/twist-rate-calculator/
    Greetings @Oldbloke.
    I ran the 60 grain VMax through a different calculator which gave me a stability factor of 1.3 which is marginally stable. @Cigar above found the 60 grain SP to be stable so this is a good indication. I have loaded some of the few VMax I have and will test at 200 metres over the next few days.
    Regards Grandpamac.
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