Weatherby 25 RPM 133gr Berger Elite Hunter Ammunition

Weatherby 25 RPM: Magnum Performance in a Compact Package

The 25 RPM represents a thoughtful evolution in rifle cartridge design. RPM stands for Rebated Precision Magnum—a modern case architecture engineered specifically for Weatherby's lightweight Mark V 6-lug action. The design philosophy is straightforward: deliver magnum-level velocity and downrange capability without the weight and bulk of traditional magnum rifles.

The Cartridge

Following the proven success of the 6.5 RPM and 338 RPM, the 25 RPM maintains the same engineering principles that made those cartridges standout performers. The rebated case design allows a full-power magnum cartridge to function reliably in a more compact action, making it ideal for hunters who value lightweight, packable rifles without compromise.

Berger Elite Hunter Bullets

These rounds are loaded with Berger's Elite Hunter projectiles—bullets engineered specifically for hunting applications:

• Hybrid Ogive Design: The nose combines a long hybrid ogive with a tangent section, then transitions to a secant ogive. This design minimizes seating depth sensitivity while maximizing aerodynamic efficiency.
• High Ballistic Coefficient: The extended nose profile produces some of the highest ballistic coefficients available, translating to flatter trajectories and better wind resistance.
• Controlled Expansion: The Elite Hunter uses a slightly thinner J4 Precision hunting jacket that initiates expansion after 2-3 inches of penetration, ensuring the bullet reaches vital organs before expanding.
• Energy Dump: Upon expansion, the projectile sheds most of its weight, creating extreme hydrostatic shock and a massive wound cavity in the vital area.

Specifications

• Velocity: 3,150 feet per second
• Bullet Weight: 133 grains
• Package: 20 rounds per box

This ammunition represents the modern approach to rifle hunting—precision engineering, proven bullet technology, and the velocity needed for ethical, effective hunting at extended ranges.