The .25 Weatherby Rebated Precision Magnum (25 WBY RPM) is a modern, non-belted, high-performance hunting cartridge introduced by Weatherby in 2026. It is the third member of the company’s Rebated Precision Magnum (RPM) family, following the 6.5 RPM and .338 RPM. Designed specifically for today’s long, high-ballistic-coefficient .257-caliber bullets, it combines magnum-level velocity with a lightweight rifle platform and excellent long-range performance.
Suitable Powders
Bullet Weight (gr) -> | 0-50 | 50-75 | 75-100 | 100-150 | 150-200 | 200-300 | >300 |
|---|---|---|---|---|---|---|---|
👍 ... suitable powder
👍👍 ... suitable AND popular powder among our reloading community (clasification might evolve as more community members share their loads )
Caliber Specifications
Standard / Datasheet
Primer Size
Large Rifle (LR)
Case Capacity
72.5 Grains of Water
Bullet / Barrel Diameter
0.257'' | 6.53 mm
Max. Case Length
2.4'' | 60.96 mm
Max. Cartridge Length
3.34'' | 84.84 mm
Max. Standardized Pressure:
65000 psi | 4482 bar
XXL ID
CID_992
.25 WYB RPM load data is available with the following bullets:
(most popular first)
