Last year i was a no neck size + bump die fan. Cycled the brass to 10x and only then did 4/100 have insufficient NT to grip the projectile. NNT barrel chamber tho. BUT this year im getting the best results putting the brass through the FL die with no expander (it does less NT than my type s. Then i set the actual NT on a mandrel die.
Tiny bit of mica dust on the shank of the projectile. Feels 100% consistant seating thats for sure. Better than dirty inner necks anyway. I honestly cant feel any variation so i guess thats as good as can be without going full nerd and measuring every projectile and every neck. Gotta be some lines you wont cross. One could go mad doing this
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