IMR 4227...What Is Its Best Use?
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December 11, 2012, 09:35 AM
Join Date: December 29, 2006
I have used it in subsonic loads of 300 Whisper/200-221 Fireball/300AAC Blackout.
Does OK but I eventually ended up using either Lil'Gun or VV 110 as they give me lower ES and seem less temperature sensitive.
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