Question

In rifles and handguns, the diameter of the bore usually indicates

Answer 1

Caliber is used to describe the size of a rifle or handgun bore and the size of cartridges designed for different bores. Caliber usually is measured as the diameter of the bore from land to opposite land and is expressed in hundredths of an inch, thousandths of an inch, or millimeters.

Step-by-step explanation:

Answer 2

In rifles and handguns, the diameter of the bore usually indicates the "gauge" of the weapon, although other indications, such as "caliber" also play an important role.