Blast From The Past: Revisiting The 9 mm Magnum 'Super Cooper'
Follow Brad Miller as he takes a closer look at the 9 mm "Super Cooper" magnum handgun cartridge, which can have cases made for it from cut down .223 Rem. casings.
Follow Brad Miller as he takes a closer look at the 9 mm "Super Cooper" magnum handgun cartridge, which can have cases made for it from cut down .223 Rem. casings.