12.7x42mm Ammunition

12.7x42 (. 50 Caliber) is one of the popular big-bore AR-15 caliber to take the firearm world by storm in the early 2000s. One of the first things you'll likely notice when picking up a 12.7x42 round is the heavily rebated rim, which fits a bolt head designed for the 7.62x39mm cartridge.
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    Freedom Big Grains 50 Beowulf 325gr Round Nose Flat Point (RNFP) New  
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