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Thread: Decapping military 5.56 and 7.72 Brass. Consumptive?

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  1. February 4th, 2014 #17
    Airgator0470
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    Quote Originally Posted by seadog View Post
    Well for starters there's the issue of dimensional differences. There are 8. The. .223 is smaller and therefore goes through more expansion in a 556 chamber thereby stressing the 223 brass.
    Differences in BRASS or differences in CHAMBER?

    I'm aware the chambers and load pressures are different, and other than MIL 5.56 cases being thicker with less internal volume in some cases... I'm unaware of external dimensional differences... can you clarify?

    http://en.wikipedia.org/wiki/.223_Remington

    http://en.wikipedia.org/wiki/5.56_x_45_mm_NATO

    http://www.ar15.com/content/page.html?id=406
    Last edited by Airgator0470; February 4th, 2014 at 08:59 PM.
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