Super magnum

The extra powder capacity can increase muzzle velocity up to 30–40% over the original magnum rounds.

Ruger, as well as Dan Wesson, introduced revolvers for this cartridge, followed shortly later by Thompson/Center in their single-shot Contender.

Dan Wesson did commence chambering their 8"-barrelled, heavy frame revolver for it in 2000; numbers were small due to lack of demand, and production was terminated by their Chapter 11 bankruptcy.

They also offered 'factory' .414 Super Mag ammunition, based upon Starline cases topped with a 220-grain TC bullet, now highly collectable.

Thompson Center were the only other manufacturer to catalogue the calibre, offering various lengths of chambered barrel for their single-shot T/C Contender.

A revolver designed for the .445 SuperMag can also fire the shorter .44 Magnum, .44 Special, and .44 Russian cartridges.