Brass Cases (Unprimed)
Spud says... "It's good practice and a neat little accuracy tip for all new brass, to run it through a full length sizing die before loading for the first time. It will also help reshape any out of shape necks that have been dinged during transit in the packaging since being manufactured"
Cases will need some extra preparation steps doing them to make them usable in modern firearms. These will include at the most basic level chamfering and deburring the case neck.
On a more advanced level we can further enhance our cases by correcting the primer pockets and deburring the flash hole in the bottom of the pocket.
Always full-length size your cases after case prep, but before priming.