original 193 load perfomance out of a 1 in 12 twist

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  • BIG1LOST

    Displaced Montanan
    Rating - 0%
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    Jul 13, 2009
    48
    6
    Pineville
    I want original terminal performance out of my 12/1twist barrel.Recommendations of factory loads AND data for reloads

    Thanx
     

    rocketsteve

    Florida Cracker
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    Dec 15, 2012
    490
    16
    Nowhere
    "Gunsmithing the AR-15" by Patrick Sweeney, copyright 2010 Krause Publications, graph on page 47:

    Standard, 1/12" twist loads:

    Federal XM193 55gr. FMJ (listed 6 times):

    16" barrel velocities range (3,052 - 3,140 FPS)
    20" barrel velocities range (3,187 - 3,244 FPS)
     
    Last edited:

    BIG1LOST

    Displaced Montanan
    Rating - 0%
    0   0   0
    Jul 13, 2009
    48
    6
    Pineville
    I am speakin' about the terminal performance of the slug...,193 bullets are too stable on impact out of a 1/12 twist...I need a slug that acts like the 193 from a 1/14;but out of a 1/12.I have read that a 12 will not stablize a 69 grn. enough,and a 62 grn. is JUST TOO stable to act like a 193 from a 1/12.
    I am hoping to not have to spend a ton on diff. slugs to find one that performs.
    Any ideas?

    THANX !
     
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