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Old March 31, 2012, 12:47 PM   #3
Senior Member
Join Date: April 29, 2009
Location: Harriman Tn
Posts: 414
Resizing dies will actually size the brass to a smaller diameter than what new rounds will be. At times this will cause that bullet base line or coke bottle appearance, it is normal. The other possibilities are the setting of your die in relation to seating/crimping or the bullet not seating square or straight. You can try seating and crimping in different stages and see if that helps.
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