Sierra Bullets .270 Cal .277 - 150gr Sp-bt 100ct

Sierra Bullets .270 Cal .277 150gr SP-BT ammunition delivers precision rifle reloading components trusted by competitive shooters, hunters, and long-range marksmen. This 100-round box contains premium spitzer boat-tail bullets engineered for consistent ballistic performance across extended ranges. Whether you're handloading match-grade ammunition or preparing hunting loads for medium to large game, these .270 caliber projectiles provide the sectional density and aerodynamic design necessary for reliable expansion and energy transfer downrange.

The 150-grain spitzer boat-tail profile combines a streamlined nose geometry with a tapered base, minimizing drag and stabilizing flight through transonic and subsonic velocity windows. With a sectional density of .279, these bullets penetrate consistently while maintaining structural integrity upon impact—critical for ethical shot placement on whitetail, mule deer, and similar game. A ballistic coefficient of .483 ensures minimal velocity degradation over distance, allowing shooters to maintain flatter trajectories and tighter velocity windows than conventional round-nose or soft-point designs. The boat-tail design also reduces bullet jump in the magazine, improving chamber consistency and group potential in precision rifles.

Reloaders working .270 Winchester or .270 Weatherby Magnum platforms will find these bullets compatible with standard .277-inch bore diameters and modern press setups. The 150-grain weight suits mid-range hunting loads (approximately 2,700–2,900 fps depending on powder charge and rifle profile) and long-range target applications. Each box contains 100 bullets, offering economical volume for developing load data or maintaining consistent stock levels for seasonal hunting preparation. Quality control and consistent jacket-to-core bonding ensure minimal runout variation and predictable velocities shot-to-shot.