Hornady InterLock is a traditional line of hunting projectiles which feature exposed lead tips known as Spire Points. Spire Points provide you with a controlled expansion and hard hitting terminal performance even at the longest of distances. The Hornady InterLocks feature a raised ring inside the jacket which help to keep both the core and jacket locked together during expansion for a maximum retention of both bullet mass and bullet energy. Specifications and Features: Hornady InterLock Projectile 4503 Inner Grooves Tapered Jacket One-Piece Core Cannelure InterLock Ring .45 Caliber .458" Diameter 350 Grain Flat Point Flat Base with Cannelure Ballistic Coefficient 0.195 Mfg: Hornady