Description

300 RUM brass for sale-.300 Remington Ultra Mag brass cases for sale

Remington unprimed 300 Remington Ultra Magnum (300 RUM) shell cases, 50 PIECES.

RELOADING PREPARATION: Brass case mouths MAY not perfectly round from the manufacturing process, this can be corrected by running brass through the size die (always recommended) prior to loading. Residue from the annealing process may leave a stain on the case neck that can be removed by tumbling. Annealing involves rapid heating then cooling to impart the shell cases with the proper hardness to securely hold bullets in place and provides flexibility to expand and contract through multiple firings Handloader’s expect.