The Winchester Super-X .300 Winchester Short Magnum (WSM) 150-grain Power-Point Soft Point (SP) Brass 20-round box is a high-velocity centerfire rifle cartridge engineered specifically for hunting medium-to-large North American big game where ultra-flat trajectories and reliable terminal energy transfer are required. A common friction point with high-velocity magnum cartridges is achieving consistent terminal expansion at extended distances without sacrificing penetration depth. Winchester resolves this performance challenge by pairing the efficient .300 WSM short-action case with their time-tested Power-Point projectile, utilizing a notched jacket and exposed lead tip to control mushrooming across broad velocity ranges.
The primary technical advantage centers on the mechanical construction of the 150-grain Power-Point bullet. Featuring an exposed lead core tip surrounded by strategically placed jacket notches, the projectile initiates immediate, controlled expansion upon target contact. The contoured copper alloy jacket thickens toward the base, preventing over-expansion or bullet breakup during heavy tissue passage, preserving retained mass to drive deep through hide, muscle, and bone into vital organ zones.
Launching its 150-grain soft point projectile at a blistering 3,260 FPS, this .300 WSM load flattens trajectory curves for simplified long-range holdovers on open-country game. The short, fat case geometry promotes uniform powder ignition and consistent chamber pressures while cycling cleanly through compact, short-action bolt-action rifles. Assembled in precision-drawn, reloadable virgin brass cases with non-corrosive Boxer primers, it delivers smooth feeding, tight shot-to-shot consistency, and effortless extraction for whitetail deer, mule deer, pronghorn, and elk.
Key Benefits
- Power-Point Notched Jacket: Exposed lead tip and jacket notches combine for immediate, uniform terminal mushrooming.
- 3,260 FPS High-Velocity Trajectory: Flattens flight paths for reduced holdover adjustments at extended hunting distances.
- Short-Action .300 WSM Efficiency: Provides magnum performance in a compact rifle action with uniform powder burn dynamics.
- Precision Reloadable Virgin Brass: Built to exact tolerances for smooth feeding, dependable extraction, and extended case life.
Technical Specification
- Ballistics: .300 Winchester Short Magnum (.300 WSM) | 3,260 FPS Muzzle Velocity | Ultra-Flat Magnum Trajectory
- Projectile: 150 Grain | Power-Point Soft Point (SP) | Exposed Lead Tip | Notched Copper Jacket
- Case/Primer: Precision-Drawn Virgin Reloadable Brass Case | Non-Corrosive Boxer Primed
- Logistics: 20 Rounds Per Box | Winchester Super-X Series
- Dimensions: Standard .300 WSM Geometry | Short-Action Bolt Rifle Configuration | SKU: X300WSM1
- Application: Big Game Hunting, Whitetail Deer, Mule Deer, Pronghorn, Elk, and Open-Country Terrain
- Standards: SAAMI Compliant | Winchester Factory Quality Control Benchmarks
When dependable hunting ammunition matters, trust SMKW to deliver genuine Winchester ammunition backed by knowledgeable service and competitive pricing. Order your Winchester Super-X .300 WSM 150 Grain Power-Point ammunition from SMKW and head into the field with proven hunting performance.
