Sierra 375 Cal 300gr SBT

Sierra 375 Cal 300gr SBT GameKing

The Sierra 375 Cal 300gr SBT GameKing is a magnum-grade component bullet engineered for handloaders pursuing long-range performance, deep terminal penetration, and aerodynamic efficiency in .375-caliber platforms. Featuring a .375‑inch diameter and a 300‑grain Spitzer boat-tail profile, this bullet delivers match-quality consistency and precise flight stability in cartridges such as .375 H&H Magnum, .375 Ruger, and .375 Canadian.

With a streamlined Spitzer ogive and tapered boat-tail base, the 375 Cal 300gr SBT achieves a G1 ballistic coefficient near 0.690. This elevated BC minimizes drag and wind drift, supporting flat trajectories and sustained supersonic flight beyond 1,000 yards—ideal for ELR applications and dangerous-game hunting.

Manufactured to strict component tolerances—300.0 grains weight, 0.375″ diameter, approximately 1.600″ overall length, and a sectional density near 0.424—the bullet maintains uniform jacket thickness, precise meplat alignment, and concentric construction. The Spitzer boat-tail geometry enhances base aerodynamics and in-flight stability.

Optimized for barrels with twist rates between 1:8 and 1:10, the 300gr SBT GameKing consistently delivers sub‑MOA accuracy in bolt-action and precision lever-action rifles. Handloaders achieve reliable downrange consistency and deep penetration, making this bullet suitable for large and dangerous-game shots in varied terrain.

As a component bullet, the Sierra 375 Cal 300gr SBT GameKing allows full reloader control over powder, primer, and seating depth—enabling custom load development for velocity, recoil, and terminal performance. It is not factory-loaded ammunition; it is a precision-grade Spitzer component built for elite performance in magnum environments.