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    jd4320t

    Grandmaster
    Rating - 100%
    23   0   0
    Oct 20, 2009
    22,894
    83
    South Putnam County
    I like this one and I haven't seen anyone else haivng it :)

    2255.jpg


    Edit: I Just realized it's a 14.5 brl with a pinned flash hider.
     

    magic man

    Grandmaster
    Rating - 100%
    31   0   1
    Mar 7, 2010
    20,357
    48
    NWI
    What twist ratio is better? 1:7 or 1:9? Also, can I shoot 223 in my 556?

    Thanks


    The barrel’s twist rate refers to the distance a bullet travels in the barrel to complete a full revolution. For instance, a 1/9" twist means that the bullet will make a complete revolution for each 9 inches traveled in the barrel. Heavier bullets require a faster twist rate to stabilize them correctly, but too fast of a twist rate will potentially cause a bullet to spin apart. For this reason it is important to match a barrel to the bullets being fired. In selecting a single twist rate for the survival AR, either a 1/7" or a 1/9" will serve the purpose best. These barrels are designed for bullets from 55 to 62 grains, and these are the weights that will most likely be used in survival. The 1/9 is the better of the two, but the majority of Colts/military barrels are 1/7.

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