22 Caliber .224 Diameter 53 Grain Flat Base Tipped Varmageddon 100 Count by Nosler and Inc The Ballistic Tip Varmageddon line offers a hollow point design with a polymer tip. These rounds expand upon impact with the target and no matter the velocity. Using a specially formulated lead core and the uniform and gradual thickening at the bullet's mid-section and keeps the bullet together until impact. The flatbase design gives bench rest accuracy from a varmint bullet. Specification and Features Ballistic Coefficient: 0.255 Sectional Density: 0.157