Hornady Critical Defense Features Hornady s Critical Defense ammunition is loaded in nickel-plated cases for increased visibility in low-light situations. Premium low flash propellants deliver proven performance even in very short-barreled handguns and won t disrupt your vision. Reliable expansion and dependable terminal performance can be counted on for concealed carry and personal protection. The patented FTX bullet expands reliably and resists clogging when fired through heavy clothing and utilizes Flex Tip technology which eliminates the clogging and inconsistency. Hornady Critical Defense Specifications Manufacturer: Hornady Model: Critical Defense Caliber: 357 Mag Bullet Weight: 125 gr Rounds Per Box: 25 Casing Material: Nickel-Plated Brass Application: Performance Protection Bullet Type: Flex Tip eXpanding Muzzle Energy: 624 ft lbs Muzzle Velocity: 1500 fps