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Canadian Firearms Practice · Question

A 'dud' or misfire in a rimfire firearm is often caused by what?

Rimfire priming compound is spun into the rim; if it is not distributed evenly, the firing pin may strike a 'dead' spot.

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Question: A 'dud' or misfire in a rimfire firearm is often caused by what?

Answer options:

  • A high-pressure gas leak ✅ The firing pin striking the edge of the rim where no priming compound is present
  • A headspace issue in the chamber
  • Using black powder instead of smokeless powder

Correct answer: The firing pin striking the edge of the rim where no priming compound is present

Explanation: Rimfire priming compound is spun into the rim; if it is not distributed evenly, the firing pin may strike a 'dead' spot.

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