What is 32 40 caliber?

.32-40 caliber is a popular cartridge used for hunting and long-range shooting. It was first introduced in the late 19th century and has remained a popular choice amongst shooting enthusiasts. It is a bottlenecked cartridge, meaning that the case neck is smaller in diameter than the case body. The bullet's diameter is .321 inches, while the case length is 2.125 inches. It is commonly used in lever-action rifles, single-shot rifles, and some bolt-action rifles. The cartridge delivers good accuracy and a relatively flat trajectory, making it ideal for hunting medium-sized game at longer distances.