Caliber: 38 Special - Weight: 110 Grains - Bullet Type: Flex Tip Expanding - Muzzle Energy: 337 ft lbs - Muzzle Velocity: 1175 fps - Casing Material: Nickel-Plated - Application: Performance/Protection - Rounds Per Box: 25 - 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.