BAGS of 100 factory new Winchester unprimed 308 Winchester/7.62 mm NATO (7.62 X 51) brass rifle cartridge cases, packaged from bulk
Winchester introduced the civilian counterpart (308 Winchester) of the 7.62 NATO in 1952, several years before the U.S. military officially adopted the round. The 7.62 NATO was the result of experiments stemming from the 1940’s with a goal to create a shorter version of the 30-06.
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Brass case mouths MAY not be perfectly round from the manufacturing process, this can be corrected by running brass through the size die (always recommended) prior to loading. Residue from the annealing process may leave a stain on the case neck that can be removed by tumbling. Annealing involves rapid heating then cooling to impart the shell cases with the proper hardness to securely hold bullets in place and provides flexibility to expand and contract through multiple firings handloaders expect.