Hornady InterLock 303 Cal & 7.7mm Japanese (.312 Dia) 150 Grain Spire Point Bullets - Box of 100

If you're handloading ammunition for your .303 British or 7.7mm Japanese rifle, Hornady InterLock 303 Cal & 7.7mm Japanese (.312 Dia) 150 Grain Spire Point Bullets deliver the controlled expansion and weight retention that serious hunters expect when pursuing larger game. This box of 100 bullets combines Hornady's proven one-piece core and jacket construction with their proprietary InterLock ring system—a design feature that locks the core and jacket together during expansion to ensure consistent performance in the field.

The 150-grain spire point profile is built for the ballistics and twist rates of classic military and sporting rifles in these calibers. The polymer tip enhances velocity and aerodynamics while the controlled expansion design produces a more substantial wound channel. Weight retention is a priority with these projectiles, meaning more of the bullet mass stays intact to do the work you need it to do downrange, rather than fragmenting on impact.

Whether you're loading for a Enfield, Arisaka, or any rifle chambered in .303 British or 7.7mm Japanese, these bullets are sized specifically for the .312-inch bore diameter of those cartridges. Hand-loaders appreciate Hornady's quality and consistency, and the InterLock line has earned a solid reputation for reliable performance on game.

Key Features

• One-piece core and jacket construction for durability
• InterLock ring system keeps core and jacket locked together during expansion
• Polymer tip for improved ballistic shape and velocity
• Controlled expansion for consistent terminal performance
• Superior weight retention to maximize penetration
• .312-inch diameter sized for .303 British and 7.7mm Japanese rifles
• 100 bullets per box

Specifications

Frequently Asked Questions

What rifles are these bullets compatible with?

These .312-diameter 150-grain bullets are designed for .303 British and 7.7mm Japanese rifles, including Lee-Enfield, Arisaka, and other firearms chambered in those calibers. Always verify your specific rifle's bore diameter and twist rate before loading.

What is the InterLock ring system?

Hornady's InterLock ring is a friction-fit band inside the bullet that locks the core to the jacket. During impact and expansion, this design prevents core-jacket separation, keeping the bullet together longer and creating a larger, more effective wound channel while maintaining weight retention.

Are these good for big game hunting?

Yes. The controlled expansion, weight retention, and one-piece construction make them suitable for larger game animals where reliable expansion and deep penetration matter. The 150-grain weight and spire point design are traditional choices for .303 British and 7.7mm Japanese hunting loads.

How many bullets are in a box?

This product contains 100 bullets per box.