Thread: Headspace variation after sizing

Hi EBF. Yes pre-sizing the cases average 1.5549 ranging from 1.553 to 1.556. So we're bumping but not consistently.

I can't find any relationship between starting length and finishing length. It's not like the long ones stay long.

I wondered if sizing wax build-up in the die was causing it so cleaned it and swapped to oil. But same results.

Yes. Hornady shoulder comparitor in vernier calliper against flat anvil edge of moving blade. Have tested the measuring set up for consistency and its sound.