Crimping is only a problem with 9mm lead bullets if you crimp. If you crimp, crimping will always be a problem to the extent of your crimp. This applies to plated and jacketed as well.
Thus instead of crimping, avoid the problem and adjust your crimp die to only remove any remaining bell at the case mouth created for accepting the bullet - and no more. That end part of your case should measure the same as just below where the bell was - in other words straight. If your bullet seating die already seems to do this (and many will), then unscrew your crimp die from its station and put it away in a drawer, or sell it on eBay.
Last edited by Gerry; January 13, 2013 at 07:02 AM.
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