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Originally Posted by Sig 210
There are several myths concerning military 5.56mm ammo. It is a myth that US made 5.56mm cases are thicker than commercial cases. For over 40 years I have weighed my cases when real good accuracy is desired. See the link below for case weights.
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Then explain to me why military brass has less case capacity and is heavier.
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A gunsmith friend says that he knows of no US firearm maker who currently uses a SAAMI chamber for the .223.
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Gee, probably all the SAAMI members who must abide by the SAAMI specs for every firearm chamber they cut.