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Canadian Firearms Practice · Question

Caliber (calibre) of a rifle generally refers to:

Calibre is the diameter of the bore (and matching projectile), expressed in inches (e.g., .308) or millimetres (e.g., 9 mm).

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Question: Caliber (calibre) of a rifle generally refers to:

Answer options:

  • The length of the barrel ✅ The diameter of the bore / projectile
  • The weight of the firearm
  • The brand

Correct answer: The diameter of the bore / projectile

Explanation: Calibre is the diameter of the bore (and matching projectile), expressed in inches (e.g., .308) or millimetres (e.g., 9 mm).

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