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.25 WSSM
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Caliber Specifications:
Caliber: | .25 WSSM |
Standard / Datasheet: | C.I.P. |
Bullet Diameter: | 0.257" | 6.53mm |
Primer Size: | Large Rifle (LR) |
Max. Case Length: | 1.670" | 42.42mm |
Max. Cartridge Length / OAL: | 2.360" | 59.94mm |
Max. Standardized Pressure: | 63817 psi | 4400 bar |
Case Capacity: | 54.3 Grains of Water | 3.53 cm3 |
CID: | CID_206 |
Last updated: | 2/20/2025 |
- The .25 Winchester Short Magnum (WSSM) is an accurate and powerful centerfire rifle cartridge based on the .300 WSM case necked down to accept .25 caliber (6.5mm) bullets. Developed in 2006 by Winchester, this round offers excellent velocities with minimal recoil - making it perfect for larger framed shooters.The .25 WSSM is primarily used for hunting big game such as elk and moose at extended ranges due to its flat trajectory and low recoil. It can also be used effectively for shooting smaller game such as deer, antelope and wild boar, making it a great all-around choice for many hunting applications.
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Most popular powders from our community members for caliber .25 WSSM:
Weight vs. Velocity - Suitable Bullets for this Caliber
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Barrel Length Variation vs. Velocity - by Bullet Weight
.25 WSSM load data available with the following bullets:
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