Caliber: 45 Colt (LC) - Weight: 185 Grains - Bullet Type: Flex Tip Expanding - Muzzle Energy: 100 ft lbs - Muzzle Velocity: 826 fps - Casing Material: Nickel-Plated - Application: Performance/Protection - Rounds Per Box: 20 - The Hornady Critical Defense line of personal defense ammunition has added 44 Special to the lineup. Loaded with the patented FTX bullet these bullets offer expansion even through heavy clothing.