The Dan Wesson Model 40 is chambered in .357 Maximum, a cartridge developed by Dan Wesson and Remington specifically for metallic silhouette competition. The .357 Maximum is a lengthened .357 Magnum case that produces approximately 200 fps more velocity. The 8-inch barrel was the standard competition configuration. The cartridge was discontinued after reports of forcing cone erosion in revolvers. Type: Revolver Action: Double-Action Caliber: .357 Maximum Capacity: 6 Year introduced: 1981, USA Weight: 52 oz Overall length: 14" Status: Discontinued Intended use: silhouette, target, collector