In a conversation with Al Nelson, he confirmed my suspicion all along, that sizing dies are made just under, about .0005", to allow for springback as Jeff stated. I check my sizing dies with pin gauges, and most of the time they are .0005" under. Sized bullets come out right at the die's specified size. The dies are made with the use of WWs in mind.
If you look back in FS #247 when I reviewed NOEs push thru sizing die, the same situation existed.
David Reiss - NRA Life Member & PSC Range Member Retired Police Firearms Instructor/Armorer
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