Question

this term describes the size of a rifle or handgun bore. this term also describes the size of cartridges used with different bores. what is the term? a gauge b caliber c shot charge d action

Explanation:

Caliber is the term used to describe the size of a rifle or handgun bore and the size of cartridges used with different bores. Gauge is more related to shotguns in a different context, shot - charge refers to the amount of shot in a shotgun shell, and action refers to the mechanism of a firearm.

Answer:

B. caliber