When comparing .454 Casull vs .44 Magnum, ... It uses a cartridge case that’s 0.10-inch longer than the .45 Colt cartridge case (the 45 Colt is often called the 45 Long Colt).

It came in two barrel length options, 45⁄8” and 51⁄2” and three calibers—.357 Mag., .44 Mag. and .45 Colt. It also was made in either blued steel or stainless.