Product Overview
The Weatherby Select Plus Hammer Custom .257 Weatherby Magnum ammunition is engineered for demanding applications requiring consistent terminal performance and precision. This load features the 100-grain Hammer Custom bullet, a specialized projectile designed to deliver effective energy transfer and controlled expansion, making it a robust option for various hunting scenarios where reliable ballistic output is critical.
Key Features
Bullet Construction and Performance
Each 100-grain Hammer Custom projectile is manufactured to stringent specifications, ensuring uniform weight distribution and concentricity. This design facilitates enhanced stability in flight, contributing to predictable trajectories and reduced environmental drift. The bullet’s construction is optimized for effective energy deployment upon impact, providing a balance of penetration and tissue disruption crucial for effective game harvesting.
Propellant System
The propellant charge is meticulously metered to maintain consistent chamber pressures and velocities across each round. This controlled burn rate is instrumental in mitigating shot-to-shot variance, which directly correlates to tighter groups and repeatable performance downrange. The clean-burning characteristics of the propellant also contribute to reduced firearm fouling.
Primer and Case Integrity
Weatherby employs high-quality, reliable primers for instantaneous and consistent ignition, critical for cold-weather performance and overall reliability. The brass cases are manufactured to precise dimensional tolerances, ensuring proper chambering, reliable extraction, and maintaining case integrity under high-pressure loads inherent to the .257 Weatherby Magnum cartridge.
Technical Specifications
- Caliber: .257 Weatherby Magnum
- Bullet Weight: 100 Grains
- Bullet Type: Hammer Custom
- Muzzle Velocity: Manufacturer specified velocities vary by barrel length and environmental conditions; refer to Weatherby documentation for specific ballistic tables.
- Muzzle Energy: Calculated in accordance with muzzle velocity data.
- Rounds Per Box: 20
- Rounds Per Case: 10 Boxes (200 Total Rounds)
- SKU: TSW|181699
- Category: Rifle Ammunition









