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Old April 7, 2013, 10:10 PM   #4
Senior Member
Join Date: October 18, 2006
Posts: 7,089
Alliant's reloading data. They don't have 1200-R listed as a powder, but by looking through the 223 Rem data I found the Sierra HPBT load.

Machine guns are awesome until you have to carry one.
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