Hornady InterLock projectiles offer traditional features with exposed lead tips, designed for controlled expansion and reliable terminal performance in hunting scenarios. Many of these projectiles incorporate the pioneering secant ogive design, one of the most ballistically efficient profiles ever developed. A key feature is the exclusive InterLock design, which includes a raised ring inside the jacket embedded in the bullet's core. This ensures the core and jacket remain locked together during expansion, retaining mass and energy for effective hunting outcomes.

• 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: Unlike two-piece divided cores, the InterLock core does not separate. This design retains more mass and energy for deep penetration and large, consistent wound channels, maximising ethical hunting outcomes.
• CANNELURE: Provides accurate and consistent crimping, and works in conjunction with the 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.

Pioneered by Hornady for use in hunting bullets, this technology broke new ground in ballistic engineering and is now used in projectiles for everything from match shooting to varmint hunting.

The secant ogive is a geometrically developed design that creates the most ballistically efficient profile, while retaining the optimum bearing surface. This combination of a slender point and increased bearing surface results in lower drag, increased stability, flatter trajectories, and exceptional accuracy for .338 projectiles.