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Canadian Firearms Practice · Question

Before firing a firearm that has been in long-term storage, you should:

Storage grease (cosmoline) or heavy oil must be removed from the bore to prevent dangerous pressure levels when fired.

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Question: Before firing a firearm that has been in long-term storage, you should:

Answer options:

  • Oil the trigger mechanism heavily ✅ Check the bore for excess oil/grease and obstructions
  • Soak the action in gasoline
  • Fire a blank round first to clear the barrel

Correct answer: Check the bore for excess oil/grease and obstructions

Explanation: Storage grease (cosmoline) or heavy oil must be removed from the bore to prevent dangerous pressure levels when fired.

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