Which option correctly matches the term with what it describes?

• A. Caliber refers to shotgun bore size; gauge refers to bore diameter for rifles.
• B. Caliber and gauge describe the same property.
• C. Caliber is the overall length of the firearm; gauge is the weight of the cartridge.
• D. Caliber refers to a cartridge’s bore diameter for rifles/pistols; gauge refers to shotgun bore size.

Answer: (D)

Understanding the difference between caliber and gauge is essential. Caliber describes the bore diameter of a cartridge and is used for rifles and pistols. Gauge describes shotgun bore size and comes from a historic system based on how many lead balls of that bore diameter would weigh a pound; in this system, larger numbers mean smaller bores. The statement that correctly matches terms is that caliber refers to a cartridge’s bore diameter for rifles/pistols, while gauge refers to shotgun bore size. The other options either swap the definitions, claim they describe the same property, or assign unrelated measurements like overall length or cartridge weight, which don’t fit.