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Concept
Lebel Model 1886 rifle
Summary
The Lebel Model 1886 rifle (French: Fusil Modèle 1886 dit "Fusil Lebel") also known as the "Fusil Mle 1886 M93", after a bolt modification was added in 1893, is an 8 mm bolt-action infantry rifle that entered service in the French Army in 1887. It is a repeating rifle that can hold eight rounds in its fore-stock tube magazine, one round in the elevator plus one round in the chamber; equaling a total of ten rounds held. The Lebel rifle has the distinction of being the first military firearm to use smokeless powder ammunition. The new propellant powder, "Poudre B," was nitrocellulose-based and had been invented in 1884 by French chemist Paul Vieille. Lieutenant Colonel Nicolas Lebel contributed a flat nosed 8 mm full metal jacket bullet ("Balle M," or "Balle Lebel"). Twelve years later, in 1898, a solid brass pointed (spitzer) and boat-tail bullet called "Balle D" was retained for all 8mm Lebel ammunition. Each case was protected against accidental percussion inside the tube magazine by a primer cover and by a circular groove around the primer cup which caught the tip of the following pointed bullet. Featuring an oversized bolt with front locking lugs and a massive receiver, the Lebel rifle was a durable design capable of long range performance. In spite of early obsolete features, such as its tube magazine and the shape of 8mm Lebel rimmed ammunition, the Lebel rifle remained the basic weapon of French infantry during World War I (1914–1918). Altogether, 3.45 million Lebel rifles were produced by the three French state factories between 1887 and 1916.
In operation, the bolt is turned up to the vertical position until the two opposed front locking lugs are released from the receiver. At the end of the bolt's opening phase, a ramp on the receiver bridge forces the bolt to the rear thus providing leveraged extraction of the fired case. The rifle is fitted with a two-piece wood stock, and features a spring-loaded tubular magazine in the fore-end. Taking aim at intermediate distances is done with a ramp sight graduated between 400 and 800 meters.
Official source
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