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Old February 2, 2013, 09:42 PM   #9
jonnyc
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Join Date: July 20, 2009
Location: PA
Posts: 808
The warnings and issues concerning ammo-use in M14s and M1As have nothing to do with the on-going myth about a difference between 7.62 and .308, the actual problem is the more sensitive primers that are often used with commercial ammo. Military primers are usually less sensitive and suffer fewer slam-fires in weapons that use inertial firing-pins than civilian/commercial primers. Not a big problem, but obviously something that Springfield was concerned about.
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