Description 1.569 – 1.576 O.A.L. The SOCOM is an awesome cartridge that is basically a long 50AE (O.A.L. of 1.575″) with a rebated .308 style head configuration, necked down to utilize .458” diameter projectiles. It has been chambered in some bolt guns, but it’s claimed to fame is in the AR-15 platform. Starline prides itself on producing the highest quality brass case available. With a production process focused on quality not quantity, Starline makes the finest brass and has done for more than 30 years.
