Sierra 264 Cal 6.5mm 140gr SBT

Sierra 264 Cal 6.5mm 140gr SBT GameKing

The Sierra 264 Cal 6.5mm 140gr SBT GameKing is a premium component bullet engineered for handloading enthusiasts and precision hunters aiming for superior long-range and big-game performance. As part of Sierra’s respected GameKing line, this .264-inch, 140gr Spitzer boat-tail bullet offers match-grade consistency, high ballistic efficiency, and deep terminal penetration.

Featuring a Spitzer boat-tail (SBT) profile, the 264 Cal 6.5mm 140gr GameKing achieves a G1 ballistic coefficient of approximately 0.510, reducing wind drift and drag for flatter trajectories and retains velocity well beyond 800 yards. Its .264″ diameter supports common precision cartridges such as 6.5 Creedmoor, .260 Remington, and 6.5×47 Lapua—offering versatility across hunting and long-range platforms.

Produced to strict factory standards—140.0 grains weight, 0.264″ diameter, approximately 1.070″ overall length, and a sectional density of around 0.265—the bullet delivers excellent concentricity, uniform jacket thickness, and stable flight behaviour. The boat-tail geometry enhances external ballistics, minimising drag and ensuring stable supersonic performance.

Optimized for barrels with twist rates between 1:8 and 1:9, the Sierra 264 Cal 6.5mm 140gr SBT GameKing delivers sub‑½‑MOA accuracy in tuned bolt-action and precision semi-auto rifles. Hunters appreciate its reliable shot placement, strong ballistic retention, and deep penetration, especially on deer, antelope, and elk-sized game.

As a component bullet, the Sierra 264 Cal 6.5mm 140gr SBT GameKing allows reloaders full control over powder selection, primer choice, and seating depth—empowering load development for trajectory preferences, recoil management, and terminal performance. It is not factory-loaded ammunition; rather, it is engineered for professionals and enthusiasts seeking handloader-level precision and power.

In summary, the Sierra 264 Cal 6.5mm 140gr SBT GameKing is a high-performance Spitzer boat-tail bullet that balances aerodynamic excellence, consistent accuracy, and deep penetration. Ideal for long-range hunting, competition, and precision applications, this component delivers elite match-grade consistency with fired terminal confidence.