12 mm Lefaucheux

The 12mm Lefaucheux is a metallic center-fire cartridge. It was originally created as a rimless pinfire cartridge using black powder employed by the French navy on the Lefaucheux M1858 revolver. Later it was adapted to a center-fire cartridge by the French Army in 1873 for use on the MAS 1873 revolver.

12 mm Lefaucheux
TypeRevolver
Service history
In service1858–1892
Used byFrench Navy and French Army
Production history
Designed1858
Specifications
Case typeRimmed, straight
Bullet diameter11.3 mm (0.44 in)
Neck diameter11.8 mm (0.46 in)
Base diameter11.9 mm (0.47 in)
Rim diameter12.6 mm (0.50 in)
Rim thickness0.94 mm
Case length19.9 mm (0.78 in)
Overall length30.8 mm (1.21 in)
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