Hornady InterLock 7mm .284 139gr BTSP Bullets - 100 Count Box

The Hornady InterLock 7mm .284 139 grain Boat Tail Spire Point bullets deliver consistent expansion and deep penetration for medium to large game hunting. These precision-manufactured bullets feature Hornady's proven InterLock ring technology that mechanically locks the core and jacket together during expansion.

What Makes This Different

The InterLock ring sets these bullets apart from conventional cup-and-core designs by preventing jacket-core separation during impact. This mechanical bond ensures the bullet retains 70-80% of its original weight while creating a controlled mushroom shape. The boat tail design reduces drag and maintains velocity better than flat-base bullets, extending effective range by 50-75 yards compared to standard spire points.

Key Features

• InterLock ring mechanically locks jacket to lead core for controlled expansion
• 139 grain weight optimized for 7mm cartridges like 7mm-08, .280 Rem, and 7mm Rem Mag
• Boat tail base design reduces drag coefficient by 15-20% over flat base bullets
• Spire point tip initiates rapid expansion on impact with game
• Secant ogive profile maintains accuracy at extended ranges
• Tapered jacket thickness controls expansion from tip to base
• 100 bullets per box provides excellent value for load development

Field performance shows these bullets excel on deer, elk, and similar-sized game at velocities from 2,400 to 3,200 fps. The 139 grain weight provides an ideal balance of velocity retention and knockdown power for most 7mm cartridges. Hunters report consistent 1.5-2 MOA accuracy in quality rifles with proper load development. The boat tail design maintains supersonic flight longer than flat-base alternatives, making these bullets effective to 400+ yards in appropriate cartridges.

Technical Specs

• Caliber: 7mm (.284 diameter)
• Weight: 139 grains
• Style: Boat Tail Spire Point (BTSP)
• Ballistic Coefficient: .486 (G1)
• Recommended Twist Rate: 1:9.5" or faster
• Quantity: 100 bullets per box
• Manufacturer: Hornady Manufacturing
• UPC: 090255228250

These InterLock bullets represent proven technology refined over decades of manufacturing excellence. The mechanical jacket-core bond eliminates the guesswork in terminal performance, while the aerodynamic profile extends practical hunting ranges beyond what older bullet designs could achieve.