The .460 Rowland is a proprietary cartridge which attains true .44 Magnum level velocities when fired from a number of popular semi-automatic pistols, revolvers, and rifles.[citation needed] The cartridge was designed and developed by Mr. Johnny Ray Rowland, host of "The Shooting Show." After first developing the new cartridge, Mr. Rowland worked with Starline Brass to finalize commercial production of the brass and later with Clark Custom Guns to develop the first commercially available .460 Rowland Conversions for specific versions of the M1911. First production shipments of ammunition and conversions were made through these associations in 1998. [citation needed]