Sierra 7mm/.284 Caliber 140 Grain Tipped GameKing Bullets - 500 Count Box

The Sierra 7mm/.284 Caliber 140 Grain Tipped GameKing Bullets deliver the accuracy and terminal performance that 7mm handloaders have demanded for years. Built with a resin tip and thick jacket engineered to controlled expansion, these rounds excel in both standard 7mm chambers and magnum variants. At 140 grains, they strike a practical balance between velocity and energy retention, making them equally at home on the range and in the field for medium to large game hunting out to extended distances.

What sets these bullets apart is their geometry: a sleek ogive paired with a ballistic coefficient that handles real-world velocity conditions. The .545 B.C. at rifle velocities of 1635 fps and above means flatter trajectories and less wind drift than conventional designs. Drop down to 1400–1635 fps, and you're still working with a solid .520 B.C.; even at lower velocities the coefficient holds at .470. That consistency across the velocity band is rare and makes these bullets forgiving in different rifle setups and hunting scenarios.

The 500-count box gives you a serious reloading supply without constant restocking. Whether you're assembling practice ammunition for load development, zeroing, or field-ready hunting cartridges, the quantity keeps your bench productive and your cost per round reasonable. Sierra's quality control on jacket concentricity and tip seating is reliable, so you can focus on powder, primer, and case prep rather than worrying about bullet inconsistency.

Key Features

• Resin tip and thick jacket for controlled expansion across impact velocities
• Sleek ogive design reduces drag and improves aerodynamics
• Velocity-adaptive ballistic coefficient: .545 B.C. at 1635+ fps, .520 B.C. at 1400–1635 fps, .470 B.C. below 1400 fps
• Suitable for standard 7mm and magnum chambers
• 500-count box for sustained reloading projects

Specifications

Frequently Asked Questions

Will these bullets work in my 7mm Magnum?

Yes. Sierra designed the GameKing 140 grain for use in standard 7mm chambers and magnum variants alike.

What ballistic coefficient should I use for trajectory calculations?

The ballistic coefficient varies with velocity. Use .545 B.C. for velocities of 1635 fps and above, .520 B.C. for velocities between 1400 and 1635 fps, and .470 B.C. for velocities below 1400 fps. This gives you the most accurate drop prediction across your hunting and range speeds.

Are these suitable for hunting?

Yes. The thick jacket and resin tip are engineered for controlled expansion, making them effective for hunting medium to large game. The aerodynamic design also supports long-range capability.

How many bullets come in a box?

Each box contains 500 bullets, providing a substantial supply for reloading projects, load development, and extended shooting seasons.