Hornady 4503 InterLock .458 Cal 350gr Flat Point Bullets - 50ct

The Hornady 4503 InterLock delivers consistent expansion and deep penetration for big game hunting with .458 caliber rifles. These 350-grain flat point bullets feature Hornady's proven InterLock ring technology that mechanically locks the core and jacket together during expansion. Built specifically for dangerous game and large North American species where reliable terminal performance matters most.

What Makes This Different

The InterLock ring sets these bullets apart from conventional cup-and-core designs by preventing jacket-core separation even at high velocities and bone contact. While standard bullets can fragment or fail to expand consistently, the mechanical locking system ensures controlled expansion from 1,800 to 2,800 fps. The flat point profile increases frontal area for maximum energy transfer on impact compared to round nose alternatives.

Key Features

• InterLock ring mechanically bonds jacket and core for 95%+ weight retention
• 350-grain weight optimized for .458 Winchester Magnum and similar cartridges
• Flat point design delivers devastating energy transfer on large game
• Tapered jacket thickness controls expansion from tip to base
• Lead core engineered for deep penetration through heavy bone and muscle
• Consistent 0.458" diameter with tight tolerances for accuracy
• 50 bullets per box, 15 boxes per case for bulk purchasing

Field performance shows these bullets excel on elk, moose, brown bear, and African plains game where deep penetration through heavy bone structure is critical. The flat point initiates expansion rapidly while the InterLock ring prevents over-expansion that can limit penetration. Hunters report consistent pass-through shots on broadside elk at ranges from 50 to 300 yards with proper shot placement.

Technical Specs

• Caliber: .458 inch diameter
• Weight: 350 grains
• Profile: Flat Point (FP)
• Construction: InterLock bonded core and jacket
• Recommended velocity range: 1,800-2,800 fps
• Sectional density: 0.238
• Ballistic coefficient: 0.295 (G1)
• Quantity: 50 bullets per box
• Case quantity: 15 boxes (750 total bullets)
• Manufactured in Grand Island, Nebraska

These InterLock bullets represent proven terminal ballistics technology for serious big game hunters who demand reliable expansion and deep penetration. The bulk case packaging provides excellent value for high-volume reloaders and hunting guides who need consistent performance across multiple seasons.