.475 Linebaugh (Accurate Data - Edition 3.3 - 2009)

.475 Linebaugh (Accurate Data – Edition 3.3 – 2009)

The .475 Linebaugh is a modern large-bore revolver cartridge developed by gunsmith John Linebaugh in the late 1980s. It was designed to provide a significant increase in power over traditional revolver cartridges while maintaining practical pressure levels for safe and reliable use in strong, custom-built handguns. The cartridge reflects Linebaugh’s design philosophy of emphasizing large bullet diameter and efficient performance rather than relying on extreme velocity, resulting in a highly effective round for hunting large and potentially dangerous game.

The cartridge is based on a shortened and modified .45-70 Government case, adapted for use in revolver cylinders and engineered to function reliably within the dimensional constraints of large-frame revolvers. It fires .475-inch bullets, offering substantially greater frontal area than standard .44-caliber handgun cartridges. Data from Accurate Edition 3.3 (2009) typically includes bullet weights ranging from approximately 400 to over 500 grains, with velocities generally in the range of 1,200 to 1,400 feet per second depending on the specific load and barrel length. These ballistics provide considerable energy and deep penetration while maintaining manageable pressure levels.

Accurate’s data emphasizes consistent ignition and proper powder selection to achieve reliable performance in large-capacity revolver cartridges. The .475 Linebaugh is intended for use on large game animals, where deep penetration and dependable terminal performance are essential. Hard-cast lead bullets are commonly used for maximum penetration, while jacketed and controlled-expansion bullets are available for applications where increased tissue damage is desired. The cartridge’s moderate velocity contributes to predictable bullet behavior and effective straight-line penetration.

Recoil is substantial and requires experienced handling, particularly in lighter revolvers. Firearms chambered for the .475 Linebaugh are typically custom or limited-production revolvers built with strong frames and carefully designed grips to manage recoil and ensure durability. Despite its power, the cartridge operates at relatively moderate pressures compared to many high-performance handgun cartridges, contributing to its reputation for efficiency and long-term reliability.

The .475 Linebaugh remains a specialized but highly respected cartridge among handgun hunters and enthusiasts. As reflected in Accurate Edition 3.3 (2009), it continues to represent a practical approach to achieving maximum revolver performance through bullet diameter, penetration and controlled pressure, maintaining its status as one of the most effective large-bore handgun cartridges available.

Source: Wolfe Publishing (Accurate Data – Edition 3.3 – 2009)