differently due to the target grey finish produced by tumbling the parts in special polishing media. The .454 Casull model is actually marked as ".454 Casull /.45 Colt", and is also capable of shooting the slightly shorter .45 Colt rounds. The .45 Colt is a less powerful round to shoot, lacking the severe muzzle blast and recoil of the .454 Casull. The option of using .45 Colt expands versatility, reduces the cost of shooting, and reduces wear. .480 Ruger The year 2003 saw the release of Ruger's first cartridge, the .480 Ruger, developed for the Super Redhawk. The .480 Ruger is built on the same frame as the .454 Casull, and was introduced as a six-shot model. While the .480 Ruger is not loaded to the rifle-like pressures of the .454 Casull, the bigger (.475 caliber, 12 mm) bore allows the use of heavier bullets than the .454 Casull, making it a good choice for handgun hunting. The .480 Ruger operates at far lower pressures than the .454 Casull, making it more comfortable to shoot. The standard Hornady 325 gr JHP .480 Ruger cartridge can produce a muzzle velocity of 1350 ft/s (405 m/s) and generates one-third more muzzle energy than the standard .44 Magnum cartridge, with substantially less recoil than other big-bore hunting handgun cartridges. The large, heavy bullet still offers excellent penetration for big game hunting. Although muzzle energy is below the .454 Casull (energy figures are not the only, or the best method of comparing bullet effectiveness, as caliber and bullet construction are not taken into consideration), the .480 Ruger's larger caliber, and heavier bullet selection, offers Taylor Knock-out values (TKO) equal to, or better than, traditional .454 loads. The cartridge accomplishes this with less recoil, concussion, and muzzle blast, due to its lower operating pressures. Model redesign In 2007, Ruger temporarily ceased production of the .480 Ruger models due to fired case extraction issues and popular demand. The fired case extraction issues resulted from individuals loading cartridges to pressures that were not meant to be for the 480 Ruger cartridge. After analyzing the problem, Ruger decided to start fitting the .480 Ruger models with 5-shot, rather than the original 6-shot, cylinders. With this release, Ruger also changed to Hogue Monogrip grips. After a couple years off of the line-up, Ruger re-introduced the .480 Ruger model, again with the original 6-shot configuration, in January 2013. Like the