HSM Ammunition Starline Pistol Brass Unprimed Cases 45 Colt Caliber Handgun Brass 100 Per Bag. 45 Colt is one of the most powerful commonly available handgun cartridges when loaded with smokeless powder. Our .45 Colt brass has been tested to .44 Magnum pressures in gun systems suitable for such loads. Specifications for Starline Brass Unprimed Cases 45 Colt Handgun Brass: Manufacturer: HSM Ammunition Gun Type: Pistol Caliber: .45 Colt Primed: No Quantity: 100 Per Bag Fabric/Material: Brass Package Contents: Starline Brass Unprimed Cases 45 Colt Handgun Brass