Reloaders can form their own . 375 SOCOM brass using the parent . 458 SOCOM case .
Reloaders must first run the cases through a . 375 SOCOM full length size die .
Reloaders can form their own . 375 SOCOM brass using the parent . 458 SOCOM case , but they must first run the cases through a . 375 SOCOM full length size die .