8-Hour Renewal – Lesson 3: Ammunition – Cartridge Designation
Lesson 3: Ammunition – Cartridge Designation CARTRIDGE DESIGNATION: CORRECT CALIBER INFORMATION CAN BE FOUND ON THE BARREL OF THE HANDGUN OR REVOLVER, THE FACTORY BOX OF AMMUNITION, AND ON THE HEAD OF THE CARTRIDGE. PLEASE ALWAYS VERIFY THAT YOU ARE USING THE CORRECT CALIBER FOR YOUR FIREARM!