Description Our traditional line of bullets feature exposed lead tips for controlled expansion and hard-hitting terminal performance. Most have our pioneering secant ogive design â one of the most ballistically efficient profiles ever developed (see diagram to right). Most feature our exclusive InterLock design â 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.INNER GROOVES: Strategically weaken the upper section of the jacket, ensuring consistent, controlled expansion, even at long range.TAPERED JACKET: Jacket thickness is precisely controlled for expansion at all velocities.ONE-PIECE CORE: Does not separate like two-piece divided cores. The InterLock retains more mass and energy for deep penetration and large, consistent wound channels that ensure quick, clean kills.CANNELURE: Provides accurate and consistent crimping and also works with InterLock ring to ensure the core and jacket remain locked during expansion.INTERLOCK RING: The raised InterLock ring is embedded in the bullet's core, ensuring the core and jacket are locked in one piece during expansion to retain mass and energy.