December 27, 2011: During the last decade there have been several attempts to get the United States to replace the 5.56mm rifle round with something more powerful. A 6.8mm round was popular for a ...
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Cartridges in the .280" (7 mm) ...
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