Chassepot Rifle

Origins

Prussia's victory over Austria in 1866 alarmed France. The Prussian Dreyse Needle Gun had shown what breech-loading rifles could do, and the French army still carried muzzle-loaders. Antoine Alphonse Chassepot, a worker at the government arms factories, had been developing a needle-fire breech-loader for several years. After trials, his rifle was adopted in August 1866 as the Fusil modèle 1866. Production at the state factories of Saint-Étienne, Tulle, Châtellerault and Mutzig, with help from private makers in France and abroad, went ahead quickly. By the outbreak of war in July 1870 the French army had roughly a million Chassepots.

Design & Construction

The Chassepot was a single-shot bolt-action rifle with a turning bolt, like the Dreyse, but it improved on it in several ways. The primer was at the base of the paper cartridge rather than behind the bullet, so the needle could be much shorter and was less likely to break. The bolt head carried a rubber ring that was squeezed outward when the rifle fired, sealing the breech against escaping gas. The bullet was a smaller 11 mm lead slug with a lighter charge behind it than the Dreyse's heavy ball, and it left the barrel at a much higher velocity. The result was a flatter trajectory and a much longer reach. The rear sight was graduated to about 1,200 meters, far beyond the Dreyse. The rifle took a long sword bayonet with a curved, yataghan-style blade. Its weak points were the rubber seal, which hardened and wore with use, and the fouling left by the paper cartridges. A trained soldier could fire perhaps eight to twelve aimed rounds a minute, though estimates vary.

Combat Use

The Chassepot's first battle was at Mentana, near Rome, in November 1867, where French troops helped the papal army defeat Garibaldi's volunteers. In the Franco-Prussian War it was the main French infantry weapon. French infantry often fought from good defensive positions and opened fire at ranges the Germans could not answer. At Mars-la-Tour on 16 August and at Gravelotte and St Privat on 18 August 1870, German attacks suffered very heavy losses; the Prussian Guard lost thousands of men in a short time in front of St Privat. The rifle's advantage was undone by poor French leadership, slow movement and the power of German artillery. At the Battle of Sedan on 1 September, French units armed with Chassepots were pinned in a narrowing ring and shelled by Krupp guns they could not reach. After the fall of the empire, the Government of National Defense raised new armies, and many of these men also carried Chassepots, alongside imported arms. German troops captured large numbers of Chassepots during the war, and some German units were issued them. French batteries of the Reffye Mitrailleuse fought alongside the Chassepot infantry.

Legacy

The Chassepot showed how a small-bore, high-velocity breech-loader could dominate an open battlefield, and German losses in 1870 pushed every army toward looser tactics. France soon moved to metallic cartridges. In 1874 it adopted the Gras rifle, and many Chassepots were converted to fire the new 11 mm brass cartridge. Surplus Chassepots and Gras rifles were sold widely, and some reached Ethiopia before the Battle of Adwa. The Gras was replaced in turn by the Lebel Model 1886, the first rifle to fire smokeless powder.