This is a discussion on Xtreme 9 mm 124 gr RNCB within the MP Reloading forums, part of the Smith & Wesson MP Forum category; Originally Posted by noylj I have no idea how a undersized sizing die can go down further on a case than a standard sizing die. ...
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|April 17th, 2017, 09:10 AM||#31|
Join Date: Jul 2014
Location: east tennessee
The 9mm resizing die is tapered from mouth to base. The part of the die that covers the solid portion of the case is the same on each die. The part that resizes the thinner part of the case is smaller on the undersize die. I hope this is makes sense to you, my explanations sometime leave a lot of confusion but make perfect sense to me.