11 mm M73 French Revolver Load Data & Reloading Guide

The 11 mm M73 French Revolver cartridge, also known as the 11 mm 1873, was developed in the late 19th century for use in the French Model 1873 service revolver. This cartridge played a significant role in French military history, as it was the standard issue for French forces during the latter part of the 19th century and into the early 20th century. The round was designed to offer reliable performance and ease of manufacture, traits highly valued during its service period.

The 11 mm M73 cartridge is characterized by its rimmed, straight-walled design, measuring approximately 11.3 mm in bullet diameter. The case length is typically around 17 mm, with an overall round length of approximately 33 mm. Typically, this cartridge is loaded with black powder, given its historical context, and paired with a lead bullet. Standard bullet weights range from 150 to 180 grains, allowing for moderate velocity and energy figures befitting revolver cartridges of this era.

Ballistically, the 11 mm M73 provides modest performance by modern standards, with muzzle velocities typically ranging between 600 and 700 feet per second. Despite this, it is considered adequate for close-quarters defense and short-range engagements, suitable for the revolver's intended military purposes. Today, it is primarily of interest to historical firearms enthusiasts and collectors who enjoy shooting vintage arms.

For reloaders, the 11 mm M73 presents a unique opportunity to engage with a piece of history. While commercial ammunition is scarce, enthusiasts appreciate the challenge of producing custom loads. Reloading enables the use of contemporary components adapted to this obsolete caliber, such as using black powder substitutes or custom-cast bullets. Reloaders can tune loads for optimized performance in vintage revolvers, providing both historical accuracy and improved shooting experiences.