Rocky`s seater trick will often save buying a form dies set, but from .257 to .243 it should not be nessary. I`ve been running 6 mm cases straight to .224 without the extra step. When forming .17 AH brass from Hornet brass the seater die trick will save alot of brass. Those thin neck on the Hornet brass will fold if you try to take the tp far, but I usually use the seater when forming .17-223 brass also. It porbibly wouldn`t be nessary with new brass, but I use alot of mil. brass.
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Catfish
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