Sierra 243 Cal 6mm 100gr SBT GameKing

Sierra 243 Cal 6mm 100gr SBT GameKing

The Sierra 243 Cal 6mm 100gr SBT GameKing is a high-performance component bullet crafted for handloading enthusiasts targeting medium-to-long-range deer hunting, varmint control, and precision target shooting. As part of Sierra’s GameKing line, this .243‑inch, 100‑grain Spitzer boat-tail bullet delivers match-grade accuracy, aerodynamic efficiency, and deep terminal effectiveness.

Featuring a sleek Spitzer ogive and tapered boat-tail base, the 243 Cal 6mm 100gr SBT GameKing achieves a G1 ballistic coefficient of approximately 0.480. This elevated BC supports flatter trajectories and reduced wind drift out to 500+ yards. Its .243″ diameter ensures compatibility with popular cartridges such as .243 Winchester, 6mm Creedmoor, and 6mm-06, making it a versatile option for hunters and precision shooters.

Manufactured to tight factory tolerances—100.0 grains weight, .243″ diameter, approximately 1.060″ overall length, and a sectional density of about 0.215—the bullet delivers uniform jacket thickness, concentric meplat, and precise base alignment. The boat-tail profile enhances downrange flight stability and minimizes drag, supporting repeatable, tight groups.

Optimized for barrels with twist rates between 1:9 and 1:10, the Sierra 243 Cal 6mm 100gr SBT GameKing consistently delivers sub‑½‑MOA accuracy when loaded carefully in bolt-action and precision semi-auto rifles. Reloaders report dependable velocity retention and reliable terminal performance on deer, antelope, and similar game.

As a component bullet, the Sierra 243 Cal 6mm 100gr SBT GameKing offers handloaders full control over powder choice, primer selection, and seating depth—enabling fine-tuned load development for trajectory, recoil, and terminal effect. It is not factory-loaded ammunition; it is designed for shooters seeking match-grade customization and performance.

In summary, the Sierra 243 Cal 6mm 100gr SBT GameKing is an elite Spitzer boat-tail bullet that combines aerodynamic excellence, accuracy, and handloader flexibility. Ideal for long-range hunting, precision target work, and varmint management, this GameKing variant delivers consistent, high-performance results for selective shooters.