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45-70 results with IMR 4198 with Micro groove Barrel
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10-11-2010, 12:34 AM
Dragon88
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Join Date: Dec 2009
Location: North Carolina
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Oversized cast bullets are the key for microgroove. I have found that gas checks help too in my 30-30, I can even get away with shooting gas checked .309s with no loss in accuracy. Plain base I stick to .311.
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