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Old March 15, 2013, 09:44 AM   #7
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Join Date: December 23, 2005
Location: Minnesota
Posts: 2,861
Small magnum primers are not meant to be used in .223.
Come on now Jeff, you know this isn't so. Do you happen to have Speer manual? Plenty of load data in the 223 section with CC 450 Mag primers. As stated above the #41 is a Mag primer and is recommended for the 223/5.56 AR type rifles.
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