12-03-2018, 04:10 AM
Assuming pin protrusion is within spec I'd suspect either lubricant thickening or carbon build up within with the bolt causing excess drag.
If the ammo was Hornady American Gunner, I've also experienced missing anvil in primer like another poster has.
If the ammo was Hornady American Gunner, I've also experienced missing anvil in primer like another poster has.

