.44-40 Winchester

The .44-40 Winchester, also known as .44 Winchester, .44 WCF (Winchester Center Fire), and .44 Largo (in Spanish-speaking countries), was introduced in 1873 by the Winchester Repeating Arms Company. It was the first metallic centerfire cartridge manufactured by Winchester, and was promoted as the standard chambering for the new Winchester Model 1873 rifle. As both a rifle and a handgun caliber, the cartridge soon became widely popular, so much so that the Winchester Model 1873 rifle became known as "The gun that won the West."

.44-40 Winchester
.44-40 Winchester cartridge
TypeRifle, revolver
Place of originUnited States
Production history
DesignerWinchester Repeating Arms Company
Designed1873
Produced1873–present
Specifications
Case typeRimmed, bottleneck
Bullet diameter.427 in (10.8 mm)
Neck diameter.443 in (11.3 mm)
Shoulder diameter.458 in (11.6 mm)
Base diameter.471 in (12.0 mm)
Rim diameter.525 in (13.3 mm)
Rim thickness.065 in (1.7 mm)
Case length1.305 in (33.1 mm)
Overall length1.592 in (40.4 mm)
Case capacity40 gr H2O (2.6 cm3)
Primer typeLarge pistol
Maximum pressure11,000 psi (75.84 MPa)
Maximum CUP13,000 CUP
Ballistic performance
Bullet mass/type Velocity Energy
200 gr (13 g) lead 1,245 ft/s (379 m/s) 688 ft⋅lbf (933 J)
217 gr (14 g) lead 1,190 ft/s (360 m/s) 682 ft⋅lbf (925 J)
225 gr (15 g) lead 1,000 ft/s (300 m/s) 500 ft⋅lbf (680 J)
200 gr (13 g) lead 1,100 ft/s (340 m/s) 537 ft⋅lbf (728 J)
Test barrel length: 20"
Source(s): Reloadersnest.com
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