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Old November 8, 2012, 09:50 PM   #5
Brian Pfleuger
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Join Date: June 25, 2008
Location: Western Colorado, finally.
Posts: 19,107
Different powders will group differently. You don't necessarily need to clean in between but you'll need 3 or 4 shots for the groups to settle when you switch powders/ammo. Might be cheaper to clean instead, but you'd still need a couple shots for groups to settle.
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