375 SOCOM

The .375 SOCOM is a fairly new cartridge, designed by Tromix Lead Delivery Systems in 2013. Taking a .458 SOCOM cartridge case and sizing the neck down to .375 caliber, resulted in a hard hitting AR-15 compatible cartridge, that has a considerable velocity and range advantage over the .458 SOCOM as well as other big bore AR-15 cartridges.