What is the calibre of a rifle that uses a .22 bullet?

The calibre of a rifle refers to the internal diameter of the firearm's barrel and is typically expressed in either inches or millimeters. A rifle that uses a .22 bullet has a calibre measurement of .22 inches. This designation directly reflects the diameter of the bullet that is intended to be fired from that rifle.

The .22 calibre is one of the most common types of ammunition used, particularly for small game hunting and target shooting, due to its relatively low recoil and cost-effectiveness. Understanding the calibre is crucial for safe and effective firearm use, as it ensures that the correct ammunition is matched with the appropriate firearm.

In contrast, the other calibres mentioned—.30, .40, and .50—denote bullets with larger diameters, meaning they would not be compatible with a rifle designed for .22 ammunition. Each calibre is designed for specific uses and ballistics, so recognizing the correct calibre helps maintain safety and efficacy in shooting practices.