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Old 11-12-2019, 08:15 PM
cplnorton cplnorton is online now
 
Join Date: Nov 2011
Location: Van Wert, Ohio
Posts: 1,950
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Springfield Armory states in the documents that they started double heat treatment between 750,000 and 780,000. Since they werent 100% sure they stated 800,000 to be safe. But it was done before then.
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