Sierra 284 Cal 7mm 140gr Tipped GameKing

Sierra 284 Cal 7mm 140gr Tipped GameKing

The Sierra 284 Cal 7mm 140gr Tipped GameKing is a high-performance component bullet designed for handloaders and hunters seeking aerodynamic efficiency, controlled expansion, and long-range precision. Part of Sierra’s GameKing line, this .284‑inch, 140‑grain polymer-tip Spitzer boat-tail bullet delivers match-grade consistency, ballistic stability, and deep terminal performance from elk to antelope.

Featuring a polymer tip and tapered boat-tail base, the 284 Cal 7mm 140gr Tipped GameKing achieves a G1 ballistic coefficient of approximately 0.480. This enhanced BC supports flatter trajectories, reduced wind drift, and sustained supersonic flight out to 500+ yards. Its .284″ diameter is compatible with popular cartridges including 7mm Remington Magnum, 7mm-08 Remington, and 7mm PRC—offering flexible platform use.

Crafted to strict factory specifications—140.0 grains weight, 0.284″ diameter, approximately 1.135″ overall length, and a sectional density near 0.239—this bullet maintains tight tolerances, concentric jacket alignment, and consistent profile. The polymer tip transitions into a precision hollow-point geometry for reliable expansion, while the boat-tail reduces drag and enhances downrange consistency.

Optimized for twist rates between 1:9 and 1:10, the Sierra 284 Cal 7mm 140gr Tipped GameKing delivers sub‑½‑MOA accuracy in bolt-action and precision semi-auto rifles. Recommended for precision hunting and long-range shooting, it balances aerodynamic performance with terminal reliability—consistently delivering tight groups and deep penetration.

As a component bullet, the Sierra 284 Cal 7mm 140gr Tipped GameKing gives reloaders full control over powder selection, primer choice, and seating depth—enabling load tuning for recoil, trajectory, and impact performance. It is not factory-loaded ammunition; rather, it is engineered for shooters seeking high-BC performance with component-level flexibility.

In summary, the Sierra 284 Cal 7mm 140gr Tipped GameKing is a top-tier polymer-tip Spitzer boat-tail bullet offering aerodynamic excellence, precision accuracy, and controlled expansion. Ideal for hunters and precision shooters working medium to large game at range, this GameKing variant delivers consistent, effective terminal results.