My favorite way is with a trim/form die and a file or hack saw OR an aircraft counter sink, I have L. E. Wilson case trimmers, RCBS ole colet type, Hornady universal chuck trimmer, and a Dillon attach it to the press type, but with the price of adapters for the Dillon and having a choice when spending my money, I had rather have another forming/trim die.
F. Guffey
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