Hornady's Critical Defense 22WMR ammunition is designed for personal defense. The 45-grain Flex Tip eXpanding bullet is engineered to maximize the potential of a hollow point bullet. Its patented Flex Tip aids expansion and eliminates clogging when passing through clothing. Nickel-plated cases increase visibility in low light situations. Low-flash propellants won't disrupt night vision and deliver consistent performance, every time. This ammunition is ideal for concealed carry or home defense. With fast shipping, you can get this critical defense ammunition to your doorstep quickly. Key Benefits and Features: Caliber: 22WMR Bullet Type: Flex Tip eXpanding Bullet Weight: 45 gr Muzzle Velocity: 1000 fps Muzzle Energy: 100 ft lbs Casing Material: Nickel Rounds Per Box: 50