.375 Winchester
Encyclopedia
The .375 Winchester is a modernized version of the .38-55 Winchester
, a black powder
cartridge
from the 1880s. .375 Winchester was introduced in 1978 along with the Winchester
Model 94 “Big Bore” lever action rifle.
Though very similar in appearance to the older .38-55, .375 Winchester operates at much higher pressures (50,000 cup
) (also the case of the .38-55 is slightly longer and its bullet diameter .3775 is larger than the .375 Winchester)
.38-55 Winchester
The .38-55 Winchester cartridge is named for its approximately .38 caliber bullet and was introduced in 1876 by Ballard which belonged to Marlin Firearms from 1875 on for various single-shot target rifles and in their 1893 lever action. It was later used by Winchester for its Model 1894...
, a black powder
Gunpowder
Gunpowder, also known since in the late 19th century as black powder, was the first chemical explosive and the only one known until the mid 1800s. It is a mixture of sulfur, charcoal, and potassium nitrate - with the sulfur and charcoal acting as fuels, while the saltpeter works as an oxidizer...
cartridge
Cartridge (firearms)
A cartridge, also called a round, packages the bullet, gunpowder and primer into a single metallic case precisely made to fit the firing chamber of a firearm. The primer is a small charge of impact-sensitive chemical that may be located at the center of the case head or at its rim . Electrically...
from the 1880s. .375 Winchester was introduced in 1978 along with the Winchester
Winchester Repeating Arms Company
The Winchester Repeating Arms Company was a prominent American maker of repeating firearms, located in New Haven, Connecticut. The Winchester brand is today used under license by two subsidiaries of the Herstal Group, Fabrique Nationale of Belgium and the Browning Arms Company of Morgan, Utah.-...
Model 94 “Big Bore” lever action rifle.
Though very similar in appearance to the older .38-55, .375 Winchester operates at much higher pressures (50,000 cup
Copper units of pressure
Copper units of pressure or CUP, and the related lead units of pressure or LUP, are terms applied to pressure measurements used in the field of internal ballistics for the estimation of chamber pressures in firearms. These terms were adopted by convention to indicate that the pressure values were...
) (also the case of the .38-55 is slightly longer and its bullet diameter .3775 is larger than the .375 Winchester)