What is 223 super short magnum?

The 223 Super Short Magnum (SSM) is a relatively new rifle cartridge developed by Winchester, first introduced in 2003. It is based on a shortened and necked-down version of the 300 Winchester Short Magnum cartridge. The purpose of developing this cartridge was to create a fast and flat-shooting cartridge with less recoil than the parent cartridge.

The 223 SSM has a bullet diameter of .224 inches and a case length of 1.220 inches. It can propel a 55-grain projectile at a muzzle velocity of around 4,000 feet per second, making it an excellent choice for long-range shooting.

The cartridge has gained popularity among varmint hunters and competitive shooters due to its flat trajectory, high accuracy, and impressive velocity. The 223 SSM is also an efficient cartridge with less powder and less recoil than traditional 223 Remington loads, making it more comfortable to shoot.

Some of the rifles that are chambered for the 223 SSM include the Winchester Model 70 and Browning A-Bolt. However, cartridges for the 223 SSM may be difficult to find in some locations, and reloading components may also be scarce. Nonetheless, it remains a popular choice for those in pursuit of long-range accuracy and accuracy in smaller caliber cartridges.