Originally Posted by
Pawildman
If you don"t lube the inside of the neck, you risk pulling the shoulder forward a bit on pulling the casing out of the resize die. Lube the inside of the neck.
Yep, man knows what he talking about. Proper inside lubing is crucial to neck concentricity, runout and consistent headspace.
I know I used to not lube the inside, and did an experiement measuring the shoulder placment variations and concentricity. The lubed necks winned by a longshot.