I’m a neck sizer. I neck size new brass, and I neck size fire formed brass. I neck size my hunting ammo, but also check it for fit before I go out to use it. Neck sizing will extend your case life, because your brass is being worked as much. I full length brass that has been fired out of another rifle, is being loaded for an auto loader, or is getting tight to fit in the chamber. Try different things and find what works for you.


JTD