The .270 Winchester is a centerfire rifle cartridge introduced in the 1920s and remains widely used for target shooting, recreational range activities, and lawful hunting where permitted by local regulations. It was developed as a necked-down derivative of the .30-03/.30-06 family and uses a .277-inch (7.04 mm) diameter bullet.

When people refer to “.270 Winchester bullets,” they often mean the projectile itself, although a complete cartridge includes the bullet (projectile), cartridge case, primer, and propellant.

Common bullet weight categories include:

• Lightweight bullets (around 90–120 grain): Often selected where lower projectile mass is preferred.
• Mid-weight bullets (around 130 grain): One of the most common commercial weight classes for the cartridge.
• Heavier bullets (around 140–150+ grain): Used where different trajectory and retained-energy characteristics are desired.

Projectile styles vary by intended application:

• Full Metal Jacket (FMJ): Commonly used for training and general range use.
• Soft Point (SP): Available in a range of sporting configurations.
• Hollow Point (HP): Offered in certain target-oriented loads.
• Polymer-tipped bullets: Produced in commercial ammunition with different aerodynamic characteristics.

Performance characteristics—including velocity, recoil, trajectory, and retained energy—depend on factors such as bullet weight, barrel length, ammunition loading, environmental conditions, and rifle setup. Factory ammunition is available across a broad range of configurations depending on manufacturer offerings.

Before use, always verify the firearm’s chamber markings, follow manufacturer guidance, comply with applicable local laws, and practice safe handling and secure storage.