Originally designed for use with blackpowder, the.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.Recommended Usage: ReloadingType: HandgunMaterial: BrassStyle: LargeLength: 1.270"-1.280"Gun Type: PistolMetal Type: BrassCaliber Or Gauge: 45 Colt (LC)Quantity: 100 Per Bag