Hornady .284 7MM 175 Grain Sp Interlock Projectiles 100 PackHornadys traditional line of bullets feature exposed lead tips for controlled expansion and hard hitting terminal performance. Most have the pioneering secant ogive design one of the most ballistically efficient profiles ever developed. Most feature our exclusive InterLock design a raised ring inside the jacket that is embedded in the bullets core, that keeps the core and jacket locked together during expansion to retain mass and energy. Features: