High-pressure .45-caliber semi-auto cartridge that converts 1911-pattern pistols into field-capable handguns rivaling .44 Magnum. The case is 1/16" longer than .45 ACP to prevent chambering in standard .45 ACP guns without conversion parts.
Type: Pistol
Introduced: 1998, United States
Parent case: .45 ACP (lengthened)
Standardization: SAAMI
Bullet diameter: 0.452" (11.48 mm)
Case length: 0.992" (25.2 mm)
Overall length: 1.297" (32.94 mm)
Max pressure: 40,000 PSI
Rim type: Rimless
Primer: Large Pistol
Typical twist rate: 1:16
Muzzle velocity: 1300–1550 fps
Muzzle energy: 695–1230 ft-lbs
Effective range: 75 yd
Common bullet weights: 185, 200, 230 gr
Primary use: Hunting, Self Defense
Production status: Active
Also known as: .460 R
History: Developed in 1998 by Johnny Rowland and Clark Custom Guns. The .460 Rowland was designed to give 1911 pistol owners near-.44 Magnum performance via a barrel and compensator conversion kit. The extra 1/16" case length prevents dangerous chambering in standard .45 ACP guns. Adoption has been limited to handgun hunters and wilderness defense users.
Notable firearms: 1911 with .460 Rowland conversion, Glock 21 with conversion
Similar cartridges: .45 ACP, .45 Super, 10mm Auto