Runout controlled
If anyone is still interested, I sanded the expander ball down till it didn't make any contact with the case neck (no expansion of case mouths after sizing) and rotated the bullets twice 90 degrees during bullet seating. The bullets will go in without case neck expansion. Total runout now is .002" or less for about 90% of loaded cartridges! The unacceptable 10% I attribute mainly to bad brass. Thanks, Jay
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