The .270 Winchester is a popular cartridge used by hunters and shooters for a variety of applications. Developed by Winchester in 1923, it is a necked-down version of the .30-03 Springfield cartridge and uses a .277-inch diameter bullet. The .270 WIN has become one of the most popular hunting cartridges in the United States due to its flat trajectory, long-range accuracy, and effectiveness on medium to large game.

The .270 WIN bullet is known for its high velocity and energy, making it ideal for long-range shooting. It typically uses bullets that weigh between 130 and 150 grains, with velocities ranging from 3,000 to 3,400 feet per second. The combination of high velocity and bullet weight results in a flat trajectory that allows shooters to accurately hit targets at long distances. The .270 WIN is often used for hunting game such as deer, elk, and pronghorn, and is popular among hunters due to its high energy transfer and knockdown power.