Description
.300 AAC Blackout, .300 BLK, 7.62x35mm
100 pieces of Starline 300 AAC Blackout cartridge cases, new, unprimed, small rifle primer pocket. Head stamp “300 BLACKOUT” UNIT PRICE .3175 cents each
Best value in 300 Blackout bullets, .123 cents each.
The .300 Blackout is based off of a shortened 5.56x45mm case that is necked to .30 caliber. For AR-15 platform rifles and pistols it only requires changing the barrel to go from 5.56 to .300 Blackout. The Blackout’s main purpose is to be used at subsonic velocities in suppressed firearms. Many bolt action and single shot rifles are now being produced in this caliber as well.
RELOADING PREPARATION:
Case mouths MAY not be 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.