How Do You Convert Caliber To Millimeters?
The caliber of a cartridge refers to the approximate diameter of the projectile, whether expressed as inches or millimeters. The cartridge manufacturer designates the caliber based on the weapon it’s designed for, to distinguish it from other cartridges of similar size. In the North American system, a bullet’s caliber is expressed in inches. A .357-caliber bullet is roughly 357 hundredths of an inch in diameter. The European system designates the bullet’s diameter in millimeters. Converting from the American system to the European method of measuring a bullet doesn’t yield the exact measurement in millimeters, but it offers a close comparison. Place a decimal point in front of the bullet’s caliber if it’s written without one. A 32-caliber bullet is roughly .32 inches in diameter. Use the decimal designation of the bullet in inches and ignore any numbers that follow it. For instance, a .30-06 and a .30-03 should both be considered .30 inches in diameter. Disregard words and abbreviation
