As a firearms expert with extensive knowledge in ballistics and firearms specifications, I can provide you with a detailed explanation of what a 308 caliber is.

The term .308 caliber refers to a specific diameter of the bore of a rifled firearm barrel. The caliber system is a way to categorize firearms by the internal diameter of the gun barrel, which is the width of the bullet that the gun is designed to fire. In the case of the .308 caliber, it is a common measurement used for rifles and is approximately 7.85 millimeters (0.308 inches) in diameter.

One of the most well-known cartridges that uses a .308 caliber bullet is the 7.62×51mm NATO, which is also known as the .308 Winchester when used in a civilian context. This cartridge is widely used for both military and civilian purposes due to its accuracy, reliability, and the balance it offers between power and manageable recoil.

The .308 caliber is favored for its versatility. It is used in a variety of applications, from hunting medium to large game to long-range target shooting and even in some military sniping roles. The .308 caliber rounds are known for their flat trajectories and relatively low recoil, making them suitable for a wide range of shooters.

In summary, the .308 caliber is a popular and effective rifle cartridge that offers a good balance of power, accuracy, and ease of use, making it a favorite among many firearm enthusiasts and professionals.

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The .308 Winchester (pronounced: "three-oh-eight") is a rimless, bottlenecked rifle cartridge and is the commercial cartridge from which the 7.62��51mm NATO round was derived. The .308 Winchester was introduced in 1952, two years prior to the NATO adoption of the 7.62��51mm NATO T65.read more >>