The Remington Core-Lokt .303 British 180-grain Soft Point (SP) 20-round box is a specialized centerfire rifle cartridge engineered specifically for harvesting whitetail deer, elk, and large big game using traditional bolt-action and military-surplus platforms. The primary failure mode when hunting with standard, non-bonded cup-and-core bullets in vintage calibers is catastrophic jacket-core separation upon impacting heavy bone or dense muscle. Under high-energy impact conditions, an unreinforced jacket can strip completely away from its lead center, resulting in shallow tracking, under-expansion, and lost game. Remington eliminates this ethical bottleneck by deploying their legendary Core-Lokt design, which mechanically locks the lead core to the copper jacket to maintain maximum structural weight retention.
The technical advantage focuses on regulating a controlled mushrooming sequence that doubles the bullet's frontal diameter while driving a deep, straight-line vital wound channel. This load utilizes a progressive, tapered copper jacket with an integrated internal locking notch that structurally anchors the lead core in place. Upon impact, hydraulic resistance forces a uniform outward peel, forming a devastating mushroom profile without sacrificing forward momentum. To ensure total safety and peak mechanical function in classic hunting rifles—such as the iconic Lee-Enfield series—the internal ballistics are meticulously tuned to remain within safe, uniform chamber pressure thresholds while optimizing downrange kinetic energy transfer.
Launching its heavy-hitting 180-grain hunting payload at a steady muzzle velocity of 2,460 FPS, this cartridge generates hard-hitting forward momentum designed to punch cleanly through tough hide and skeletal structures. Built with high-grade, first-run brass casings and ultra-stable, non-corrosive Boxer primers, the Core-Lokt series ensures exceptionally low velocity standard deviations and positive mechanical extraction. Charged with advanced clean-burning propellants to minimize carbon accumulation in classic actions, this 20-round box delivers a rock-solid, predictable point of impact and serves as a highly reliable, reloadable configuration for high-volume field use.
Key Benefits
- Legendary Core-Lokt Architecture: Internally locked copper jacket mechanically anchors the lead core to prevent jacket separation and guarantee deep vital penetration.
- Controlled Hunting Expansion: Progressive tapered jacket design forces uniform hydraulic mushrooming that effectively doubles the projectile's frontal diameter.
- Classic Rifle Pressure Tuning: Meticulously calibrated to deliver optimum velocity while maintaining safe chamber pressure bounds for vintage Lee-Enfield actions.
- Premium First-Run Brass Cases: High-quality Boxer-primed brass provides glass-smooth chambering and extraction while offering outstanding durability for reloaders.
Technical Specification
- Ballistics: .303 British | 2,460 FPS Muzzle Velocity | Heavy-Duty Large Game Hunting Profile
- Projectile: 180 Grain | Core-Lokt Soft Point (SP) | Tapered Copper Jacket | Mechanically Locked Lead Core
- Case/Primer: Premium First-Run Brass Case | Non-Corrosive Boxer Primed | Clean-Burning Stable Propellant | Reloadable
- Logistics: 20 Rounds Per Box | Core-Lokt High-Performance Hunting Series
- Dimensions: .303 British | ~1.25 lbs Per Box | SKU: 21471
- Application: Medium to Large Big Game Hunting and Vintage Rifle Shooting | Whitetail, Mule Deer, Elk, Bear, and Wild Boar
- Standards: SAAMI Compliant | Factory Precision Hunting Quality Benchmarks
For hunters running classic .303 British rifles, this Core-Lokt load bridges vintage platforms with modern terminal consistency, delivering controlled expansion and deep penetration where it matters most. Smoky Mountain Knife Works is a trusted source for securing Remington ammunition with dependable availability and field-proven performance across big game seasons.
