The Weatherby Select Plus .25 Weatherby RPM 107-grain Hammer Custom load is built for back-country hunters who need absolute terminal consistency at extended ranges. A frequent headache with traditional lead-core bullets at extreme velocities is that they tend to fragment or break apart upon hitting heavy bone, ruining penetration. This premium round eliminates that worry by deploying a monolithic, solid copper projectile that maintains its structural integrity while delivering controlled, devastating expansion downrange.
The technical advantage lies in the pairing of a lathe-turned solid copper bullet with Weatherby's cutting-edge Rebated Precision Magnum (RPM) case design. The RPM cartridge features a steep 35° shoulder and minimal body taper to pack more powder capacity into a standard-action footprint, while its rebated rim fits standard bolt faces perfectly. This architecture delivers an incredibly stable pressure curve and an efficient powder burn, translating into rock-solid velocity consistency regardless of freezing high-altitude temperatures or blistering heat.
Screaming out of the muzzle at 3,350 FPS, the 107-grain Hammer Custom bullet leverages a sleek .435 G1 ballistic coefficient to slice through heavy crosswinds and retain immense downrange energy. Upon impact, the specialized hollow-point nose geometry is engineered to expand and deliberately shed its front petals to create a massive initial wound channel. Meanwhile, the heavy, solid copper shank remains completely intact, driving deep through thick hide and bone for a clean, ethical harvest.
Key Benefits
- Lathe-Turned Monolithic Copper: Solid copper construction eliminates jacket separation and fragmentation, ensuring maximum weight retention.
- Controlled Petal Shedding: Specially designed hollow-point nose sheds its forward petals to maximize internal trauma while the solid base punches deep.
- Advanced RPM Case Geometry: Feature-rich 35° shoulder geometry maximizes powder efficiency for flat trajectories and low velocity deviation.
- High-BC Wind Resistance: Sleek .435 G1 ballistic coefficient minimizes mid-flight drag and wind drift over long hunting distances.
Technical Specification
- Ballistics: .25 Weatherby RPM | 3,350 FPS Muzzle Velocity | 2,667 ft-lbs Muzzle Energy
- Projectile: 107 Grain | Hammer Custom | Lathe-Turned Monolithic Solid Copper Hollow Point
- Case/Primer: Premium Weatherby RPM Brass | Rebated Rim | Non-Corrosive Magnum Primer | Reloadable
- Logistics: 20 Rounds Per Box | Select Plus Custom Series
- Dimensions: .25 Wby RPM | ~1.20 lbs Per Box | SKU: M25RPM107HCB
- Application: Medium to Large Big Game Hunting | Deer, Pronghorn, Elk, & Caribou | Extended-Range Precision
- Standards: SAAMI Compliant | Custom-Grade Factory Specifications
SMKW delivers verified, factory-direct ammunition from proven manufacturers like Weatherby. Secure your supply of .25 Wby RPM Select Plus Hammer Custom loads with confidence in authenticity, compliance, and consistent availability.
