Hornady's traditional line of bullets feature exposed lead tips for controlled expansion and hard hitting terminal performance. Most have their pioneering secant ogive design - one of the most ballistically efficient profiles developed. Most feature Hornady's exclusive InterLock design - a raised ring inside the jacket that is embedded in the bullet's core that keeps the core and jacket locked together during expansion to retain mass and energy. SECANT OGIVE DESIGN : Pioneered by Hornady for use in hunting bullets this technology broke new ground in ballistic engineering and is now used in bullets for everything from match to varmint shooting. The secant ogive is a geometrically developed design that creates the most ballistically efficient profile yet retains the optimum bearing surface. The combination of the slender point and increased bearing surface results in lower drag increased stability flatter trajectories and amazing accuracy.