User:ArkRoyally

= .460 Rowland = The .460 Rowland is a pistol cartridge designed by Johnny Rowland as a high-powered .45 caliber round for semi-automatic pistols.

History
Rowland's original intent was to create "true .44 Magnum ballistics from your lightweight, easy-to-carry, high-capacity .45 caliber firearm".

Design
The .460 Rowland® case is approximately 1/16" longer than a conventional .45 ACP case but the overall cartridge length is the same, the bullet is simply seated more deeply. The purpose of the extended case length is to prevent the high pressure .460 Rowland® from being chambered in a standard firearm chambered for the low pressure .45 ACP. This is similar to the relationship between the .357 Magnum and the .38 Special.

There are two key elements to the .460 Rowland® concept. The first is a sharp increase in cartridge maximum pressure over the .45 ACP and .45 Super. Maximum Average Pressure is: .45 ACP (21,000 PSI), .45 ACP +P (23,000 PSI), .45 Super (28,000 PSI), .460 Rowland® (40,000 PSI). The second is to damp or reduce the velocity of the slide in converted auto-loading pistols to manageable levels. The first delivers magnum level performance and the second allows the cartridge to be easily and reliably fired from compact, light weight, high capacity, auto-loading pistols.

Performance
Since the goal of this cartridge was to produce .44 Magnum ballistics, the .460 Rowland is a viable choice for personal protection against dangerous wildlife. The designer claims that it can propel a "185 gr bullet downrange at nearly 1,600 fps with over 1,000 pounds of energy". "Johnny's Personal Carry" ammunition is a 185gr. FMJ HP round with an advertised muzzle velocity of 1,575 feet per second, generating 1,019 ft-lbs of energy.

Firearms
Conversion kits (that include a new barrel with a ported compensator) are available for the 1911 Models, Glock 19, Glock 21, Glock 30, Springfield XD, Springfield XDm, FN FNX platforms, all chambered in .45 ACP. It is also possible to buy pistols with the conversion kit already installed. It is important to note that firearms with the kit installed can shoot .45 ACP, +P, .45 Special and .460 Rowland ammunition.