So I just got a new batch of .308 lapua brass. Do I need to size the brass prior to loading? All of my brass is passing the chamber gauge I have and even in the chamber of my rifle and is within spec as far as length. Besides a few dented necks that I can run through my expander mandrel all of it seems ready to go. 2nd question I got is will my expander mandrel set enough neck tension? It’s an LE wilson expander mandrel.
Vincent
Vincent