Thread: 300/221 Recipe for AR
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  #8  
Old 10-19-2006, 02:47 AM
Cornholio Cornholio is offline
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Join Date: Feb 2005
Posts: 108
I like using Alliant 2400 for my Whisper needs. I have a simple formula that works for me. 9.0grs under a 220gr SMK for subsonic loads, double that (18grs) under a Sierra 110gr JHP for supersonic 2,300-2,400fps loads.
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