Winchester Model 1866
Winchester Repeating Arms Company · Rifle · Discontinued · 1866
Also known as: Yellow Boy, Model 66, Winchester '66, Improved Henry, King's Improvement Rifle
Overview
The Winchester Model 1866 is a lever-action repeating rifle manufactured by the Winchester Repeating Arms Company of New Haven, Connecticut, and was the first firearm to bear the Winchester name. Evolved directly from the earlier Henry rifle of 1860 by the newly reorganized company under Oliver Winchester, the Model 1866 retained the Henry's toggle-link lever action and brass gunmetal receiver while incorporating shop foreman Nelson King's patented improvements: a sealed receiver with a side-mounted spring-loaded loading gate (the 'King's Improvement') and a separate wooden forearm. These changes allowed the rifle to be loaded from the side without inverting the firearm, kept debris out of the magazine tube, and eliminated the Henry's tendency to scorch the shooter's supporting hand. Chambered in .44 Henry rimfire and fed from a 17-round tubular magazine on the rifle, 13 rounds on the carbine, and 17 rounds on the musket, the Model 1866 offered unprecedented sustained firepower for its era. The distinctive golden-yellow gunmetal receiver earned it the enduring nickname 'Yellow Boy' and made it a favorite among frontiersmen, lawmen, Native American warriors, and foreign armies alike. Approximately 170,000 were produced between 1866 and 1898 across rifle, carbine, and musket configurations, and it secured Winchester's reputation as the premier maker of American repeating rifles.
Specifications
| Weight (empty) | 4200 g (148.2 oz) |
| Overall Length | 1125 mm (44.29") |
| Barrel Length | 610 mm (24.02") |
| Action Type | Lever Action |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Magazine Capacity | 17 rounds |
| Magazine Type | Tube |
| Muzzle Velocity | 347 m/s (1138 fps) |
| Muzzle Energy | 818 J (603 ft·lbf) |
| Effective Range | 100 m (109 yd) |
| Maximum Range | 1000 m (1094 yd) |
| Rate of Fire | 20 rpm |
| Barrel Rifling | Right Hand |
| Rifling Twist | 914 mm (35.98") |
| Number of Grooves | 6 |
| Frame Material | Brass |
| Barrel Material | Steel |
| Stock Material | Wood |
| Finish | Blued |
Calibers
- .44 Henry Rimfire · primary — also known as .44 Henry Flat, .44 Rimfire, 11x23mmRF
- .44 Winchester Centerfire — also known as .44 Winchester CF, .44 WCF (early)
Features
- Firing modes: Repeating
- Feed systems: Tubular Magazine
- Safety mechanisms: Half Cock Safety
- Features: Lever Action, Tubular Magazine, Brass Receiver, Kings Improvement Loading Gate, Side Loading Gate, Closed Receiver, Wooden Forearm, Graduated Rear Sight, Fixed Post Front Sight, Walnut Stock, Crescent Metal Buttplate, Octagonal Or Round Barrel Options
Variants
- Winchester Model 1866 Rifle — Standard
- Winchester Model 1866 Carbine — Carbine
- Winchester Model 1866 Musket — Musket
Service history
Operators
- United States Civilian Market · adopted 1866
- Ottoman Empire Armed Forces · adopted 1870
- Mexican Armed Forces · adopted 1866
- French Army (Franco-Prussian War) · adopted 1870
- Native American Tribes
Conflicts
- American Indian Wars (1866-1890)
- Franco-Prussian War (1870-1871)
- Russo-Turkish War (1877-1878)
- Second French Intervention in Mexico (1866-1867)
- Fetterman Fight (1866)
- Wagon Box Fight (1867)
Production
Estimated total produced: 170,101 · Production years: 1866-1899
Approximately 170,101 original Winchester Model 1866s were produced between 1866 and 1899 across rifle, carbine, and musket variants. Significant export orders went to the Ottoman Empire (notably ~45,000 muskets and 5,000 carbines in 1870-1871) and to Benito Juárez's Mexican Republican forces. Modern reproductions are currently manufactured by Uberti and Chiappa in Italy and imported by Cimarron Firearms, Taylor's & Co., and others.
Origin
Country of origin: United States
Designer: Nelson King
Discontinued: 1899
Notes
Specifications are based on the standard rifle configuration with a 24-inch octagonal barrel in .44 Henry rimfire. Carbine variant used a 20-inch round barrel with 13-round magazine; musket variant used a 27-inch round barrel with 17-round magazine and accepted a socket bayonet. The receiver was made from an alloy originally referred to as 'gunmetal' - a bronze/brass alloy with a yellow-gold color - which gave the rifle its 'Yellow Boy' nickname. A limited number of late-production rifles were chambered in .44 Winchester Centerfire after 1873 to keep the design viable. Modern reproductions are produced by Uberti, Chiappa, Cimarron Firearms, Taylor's & Co., and Winchester/Miroku.
Background
Nicknamed the 'Yellow Boy' for its golden gunmetal receiver, the Model 1866 became notorious at the 1867 Wagon Box Fight and the 1877 Battle of the Little Bighorn, where Lakota and Cheyenne warriors armed with Yellow Boys outgunned Custer's single-shot cavalry carbines. In 1877 during the Russo-Turkish War, some 30,000 Ottoman soldiers wielding Model 1866 muskets held the siege of Plevna against the Russian Imperial Army, inflicting catastrophic losses and directly inspiring Tsar Alexander II to begin modernizing the Russian army with repeating rifles.