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.243 WSSM Load Data

Alternative names: .243 Winchester Super Short Magnum, 243 WSSM

Our load data for caliber .243 WSSM covers 210 bullets from 29 manufacturers and a total of 13230 load recipes. In addition, our members have shared 5 load recipes.

The .243 Winchester Short Magnum (WSSM) is a powerful and highly accurate centerfire rifle cartridge based on the .300 WSM case necked down to accept .243 caliber (6mm) bullets. Developed in 2006 by Winchester, this round offers good velocities with minimal recoil - making it perfect for smaller framed shooters.The .243 WSSM is primarily used for hunting medium sized game such as deer, antelope and wild boar at extended ranges due to its flat trajectory and low recoil. It can also be used effectively for shooting varmints such as coyotes, foxes and prairie dogs, making it a great all-around choice for many hunting applications.

Caliber Statistics

Standard / Datasheet

Primer Size

Large Rifle (LR)

Max. Case Length

53.9 Grains of Water

Bullet / Barrel Diameter

0.243'' | 6.17 mm

Max. Case Length

1.663'' | 42.24 mm

Max. Cartridge Length / OAL

2.36'' | 59.94 mm

Max. Standardized Pressure:

63817 psi | 4400 bar

XXL ID

CID_182

.243 WSSM load data available is with the following bullets:

(most popular first)

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