8 mm Lebel Load Data & Reloading Guide
Also known as: 8x50mmR Lebel, 8mm Lebel, 8mm French
About 8 mm Lebel
The 8 mm Lebel cartridge, also known as the 8x50mmR French, holds historical significance as the world's first smokeless powder military cartridge, introduced in 1886 for the French Lebel Model 1886 rifle. It was a revolutionary development in ammunition technology, significantly improving ballistic performance over black powder cartridges of the era. The innovation of the 8 mm Lebel set the stage for subsequent advancements in ammunition, influencing military cartridge designs worldwide.
Technically, the 8 mm Lebel features a rimmed case with a 50.5 mm length, designed to accommodate the then-new smokeless powder, known as "Poudre B." The original bullet design was a full metal jacket round-nosed projectile weighing approximately 232 grains. This configuration delivered a standard muzzle velocity of around 2,380 feet per second and a muzzle energy of roughly 2,917 foot-pounds, offering superior performance compared to contemporary cartridges. Over time, the design evolved to include spitzer bullets for improved range and ballistic efficiency.
In practical applications, the 8 mm Lebel served as the primary military cartridge for French forces through World War I and into World War II. For civilian use, it has found a niche in both hunting and competitive shooting disciplines. Its ballistics suit medium to large game hunting, making it suitable for deer, boar, and similar game animals. In target shooting, particularly in historical and vintage rifle competitions, the cartridge retains a dedicated following among enthusiasts and collectors who appreciate its historical significance.
For reloaders, the 8 mm Lebel presents both challenges and rewards. Component availability can be a hurdle due to its historic nature, but preservation-minded collectors and shooters are often drawn to its rich history. Effective reloading requires attention to case dimensions due to the rimmed design and finding appropriate bullet weights, typically ranging from 198 to 232 grains. Reloaders benefit from exploring modern powders, allowing for optimized ballistic performance and tuning loads to specific weapons, highlighting the versatility and ongoing relevance of this storied caliber.
Technical Drawing

Technical Specifications
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Frequently Asked Questions
The maximum pressure for 8 mm Lebel is 18,130 psi | 1,250 bar.
8 mm Lebel typically uses a Small Pistol (SP) primer.
The case capacity of 8 mm Lebel is approximately 18 grains of water (H₂O).