Winchester has discontinued the manufacture of 243 WSSM ammunition. As of the first half of 2016, Winchester/Olin did manufacture and release for sale some WSSM ammunition. The product is only …

Jun 30, 2025 · We take a quick look at the oddly proportioned .243 Winchester Super Short Magnum cartridge, aka .243 WSSM. Announced in 2002, the .243 WSSM was intended to deliver a new level …

Introduced in 2003, the .243 Winchester Super Short Magnum (WSSM) is a modern rifle cartridge developed jointly by Winchester and Browning. Its design was part of the WSSM series, created to …

The latest cartridge to be used in benchrest competition is the .243 Winchester Super Short Magnum which although designed primarily as a varmint to deer cartridge, has shown merit on the 600 yard …

.223 and .243 WSSM. Both are a shortened (by 0.47”) version of the parent Wincheste Short Magnum cases. With the short-fat case design, more propellant is exposed to the primer, theoretically …

The .243 Winchester Super Short Magnum (.243 WSSM) was designed in 2003 by Browning and Winchester. It is based off the .300 Winchester Short Magnum cartridge and has a 1:10 twist with a …

In 2003, with inspiration from high-velocity benchrest cartridges like the 6mm BR and 22 PPC, the 223 and 243 Winchester Super Short Magnums (WSSM) were introduced.

For 2003 Winchester announced a pair of new Winchester Super Short Magnum (WSSM) calibers designed for a rifle action about 1/2 inch shorter than the usual (.243 Winchester length) short action. …

Compared to the standard .243 Winchester, the .243 WSSM offers higher velocities and energy, delivering better long-range performance. Its compact case design enables use in shorter, lighter rifles.

Jun 10, 2016 · While long range shooters and hunters were, and are, focused on traditional (bolt action) feed issues, the mechanical performance failings of the .243 WSSM are simply solved by introducing …