This is Starline 458 SOCOM Basic brass that can be used for forming 500 SOCOM, 475 SOCOM, 458 SOCOM, 44 SOCOM, 10mm SOCOM, 375 SOCOM, 358 SOCOM, or 338 SOCOM cases.
The cases are all head stamped 458 SOCOM and range in length from 1.581″ to 1.584″. They will need to be trimmed to final length after forming.
Machined for Large Pistol Primers.
Sold in 100 piece bags.