The Hornady .323 8mm 150 Grain SP Interlock Bullet is an unprimed, component projectile designed for handloading modern 8mm rifle cartridges, such as the 8x57mm IS (8mm Mauser), 8mm-06, and 8mm Remington Magnum. Engineered with a classic Spire Point (SP) profile, this 150 gr bullet features Hornady's InterLock mechanical design to ensure reliable jacket-to-core retention, controlled mushrooming, and consistent terminal performance on game at moderate hunting distances.

Key Features

• InterLock Ring: Features an internal mechanical ring embedded into the lead core that locks the core and jacket together during terminal upset to minimise core-jacket separation and maximise mass retention.
• Progressive Tapered Jacket: Incorporates engineered inner jacket grooves to initiate expansion reliably, backed by a tapered copper alloy jacket that controls expansion across varying impact velocities.
• Integrated Cannelure: Provides a dedicated grooved surface for precise case crimping and assists the mechanical InterLock ring in governing terminal expansion.
• Optimised Hunting Weight: Weighs 150 grains (approx. 9.72 grams), balancing higher initial muzzle velocity with controlled terminal penetration on medium game species.

Specifications

• Calibre: 8mm
• Bullet Diameter: .323 in
• Bullet Weight: 150 grains
• Ballistic Coefficient: 0.290 (G1)
• Sectional Density: 0.205
• Box Quantity: 100 count
• Compatible Cartridges: Modern .323-bore 8mm chamberings (e.g., 8x57mm IS, 8mm-06, 8mm Remington Magnum)

Who is the Hornady .323 8mm 150 Grain Sp Interlock Bullets 100 Pack for?

• Handloaders for 8x57mm IS Mauser rifles — requires modern .323 in diameter reloading bullets in a 100 count box that seat to standard 8mm case mouths and feed reliably through military-surplus or commercial bolt-action magazines.
• Hunters targeting medium to large game within 250 to 300 metres — utilizes a 150 grain weight and a 0.205 Sectional Density to deliver controlled expansion and sufficient hunting energy on game weighing up to 680 kg without unnecessary recoil.

Less suitable for: Long-range shooting beyond 300 metres due to the modest 0.290 G1 Ballistic Coefficient, antique rifles with .318-bore (8x57 I) barrels, or heavily built quarry such as feral buffalo and large Sambar deer; these scenarios are better served by heavier 170 to 195+ grain projectiles or high-BC boat-tail monolithic and polymer-tipped hunting bullets.