The 7mm Remington Short Action Ultra Magnum (SAUM) is a short-action rifle cartridge introduced by Remington in 2002. It is designed to offer magnum-level performance in a shorter cartridge length, which allows it to be chambered in short-action rifles. This makes the rifle lighter and more compact without significantly sacrificing ballistic performance.
The 7mm SAUM cartridge is based on the .300 Remington Ultra Magnum case, shortened and necked down to accept 7mm (0.284 inch) bullets. It is capable of propelling a range of bullet weights at high velocities, suitable for hunting various game from medium-sized deer to larger animals like elk. Typical muzzle velocities range between 2,900 and 3,200 feet per second (fps), depending on the bullet weight and load.
This cartridge is known for its flat trajectory, high energy, and good long-range potential. However, compared to more popular 7mm cartridges like the 7mm Remington Magnum, the 7mm SAUM has not gained a significant foothold in the hunting or shooting community. Availability might be more limited due to its less widespread use.