12 Mm Lefaucheux
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The 12mm Lefaucheux is a metallic center-fire cartridge. It was originally created as a rimless
pinfire cartridge A pinfire cartridge is an obsolete type of metallic firearm cartridge in which the priming compound is ignited by striking a small pin which protrudes radially from just above the base of the cartridge. Invented by Frenchman Casimir Lefaucheux in ...
using black powder employed by the French navy on the
Lefaucheux M1858 The Lefaucheux M1858 was a French military revolver developed for the navy, chambered for the 12 mm pinfire cartridge, and based on a design by Casimir Lefaucheux and his son, Eugene (also a gun designer). The 1854 model was the first metall ...
revolver. Later adapted for center-fire by the French Army in 1873 for use on the
MAS 1873 revolver The service revolver model 1873 Chamelot-Delvigne was the first double-action revolver used by the French Army. It was produced by Manufacture d'armes de Saint-Étienne from 1873 to 1887 in about 337,000 copies. Although replaced by the Modele 1 ...
.


Overview

Originally, the 12 mm, was a classic Lefaucheux cartridge, with a side pin from its introduction in 1858 until 1873, when it was adapted and became a rimmed center-fire cartridge for use in the MAS revolver 1873-1874 then used by the French Army.


Features

These are the characteristics of the '12 mm Lefaucheux' cartridge: * Brass case * Caliber: 12mm * Ammo: 12 X 17 * Bullet diameter: 11.30 - 11.40 mm (.444" - .448") * Neck diameter: 11.80 - 11.85 mm (.464" - .466) * Base diameter: 11.90 - 11.92 mm (.468" - .469") * Rim diameter: 12.64 - 12.66 mm (.497" - .498") * Rim thickness: 0.9 - 1.0 mm (.035" - .039") * Case length: 19.90 - 20.00 mm (.783" - .787") * Overall length: 30.77 - 30.80 mm (1.211" - 1.212") * Primer: patented GAUPILLAT * Total weight: 18.34 grams * Bullet weight (lead): 12.80 grams * Cartridge weight: 4.74 grams * Black powder charge: 0.80 g These are the most frequently encountered ("
headstamp A headstamp is the markings on the bottom of a cartridge case designed for a firearm. It usually tells who manufactured the case. If it is a civilian case it often also tells the caliber: if it is military, the year of manufacture is often added. ...
") tags: * 1 / E / 82 / G. E * 4 / F / 82 / G.E * 1 / G / 82 / G. E * 4 / G / 82 / G.E * 4 / M / 82 / G. E * 4 / K / 82 / G. E In these markings, the initials "G. E" referring to the manufacturer "Ernest Gaupillat", and the other letter and digits referring to the batch (probably place and date).


Dimensions


See also

*
12 mm caliber This is a list of firearm cartridges which have bullets in the to caliber range. *''Length'' refers to the cartridge case length. *''OAL'' refers to the overall length of the cartridge. *''Bullet'' refers to the diameter of the bullet. Some m ...
*
List of handgun cartridges List of handgun cartridges, approximately in order of increasing caliber. Table of handgun cartridges {, class="wikitable sortable" style="text-align:left" , - ! Cartridge name , , Bulletdiameter , , Caselength , , Cartridgelength , , Type , ...


References


External links

{{WWIFrenchInfWeaponsNav Pistol and rifle cartridges Military cartridges