Canadian Firearms Practice · Question
What is the result of using a shotshell longer than the chamber length marked on a shotgun?
A shell that is too long will not allow the crimp to open properly, creating a bottleneck that causes dangerous pressure spikes.
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Question: What is the result of using a shotshell longer than the chamber length marked on a shotgun?
Answer options:
- Increased accuracy
- The shell will not fire ✅ Dangerous increases in chamber pressure
- Slower muzzle velocity
Correct answer: Dangerous increases in chamber pressure
Explanation: A shell that is too long will not allow the crimp to open properly, creating a bottleneck that causes dangerous pressure spikes.
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