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Join Date: Nov 2008
Location: hearts in New England
Re: new brass question
Straight from John Barseness,
<span style="color: #CC0000">New brass doesn't need to be sized. That's already been done at the factory. You're probably bumping the shoulder back slightly before the first firing, and that's causing your case-stretching problems. Use the fired brass to set you sizing die.
The only thing I ever do to new brass is run the neck over the expander ball of my die to make the neck nice and round, and bullet-pull consistent.
Please let me know if this solves your problem.</span>