bore
What Is The Definition Of Bore In Shooting Sports?
In shooting sports, bore is the diameter of the inside of a firearm’s barrel. It is expressed in millimeters or fractions of an inch and is one of the factors in determining a caliber of a particular firearm.
Example Of How Bore Is Used In Commentary
1. By receiving the 4-H pin, Paul demonstrated from an early age his proficiency in small-bore rifle shooting sports.