Lindcott Armory Rifle · SAAMI
.25 Weatherby RPM
.25 WBY RPM25 Weatherby Rebated Precision Magnum
Modern .257-caliber Weatherby RPM-family hunting cartridge..
Identity
- Introduced
- 2026
- Type
- Rifle
- Origin
- United States
- Inventor
- Weatherby
- Manufacturer
- Weatherby
- Standard
- SAAMI
- Status
- Active
- Availability
- Limited
Dimensions
- Bullet ⌀
- 0.257″
- Overall length
- 3.34″
- Primer
- Large Rifle Magnum
- Case type
- Rebated
Performance
- Max pressure
- 65,000 psi
Ballistics
- Velocity
- 3,150 fps
- Energy
- —
- Parent case
- 6.5mm Weatherby RPM
Representative trajectory — modeled from a single velocity input, not a measured load.
Dimensions
Reloading cost
Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.
Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.
Lineage
Immediate parent
Family TreeOpen .25 Weatherby RPM in the interactive cartridge family tree↗Connected reference
History
Introduced for 2026 (SAAMI drawing Jan 2026); a shortened, necked-down 6.5 Wby RPM. MAP 65,000 psi. SAAMI reference load is 133gr @ 3,000 fps.
FAQs
- What bullet diameter is .25 Weatherby RPM?
- .25 Weatherby RPM uses a 0.257″ (6.53 mm) diameter bullet.
- Is .25 Weatherby RPM still in production?
- .25 Weatherby RPM is active; typical availability is limited.
- What is .25 Weatherby RPM used for?
- .25 Weatherby RPM is primarily used for hunting, long range.
- What is .25 Weatherby RPM based on?
- .25 Weatherby RPM is derived from the 6.5mm Weatherby RPM case.
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →