With any rifle, particularly under stress, the odds of hitting a particular vital organ to cause an instant stop to the threat are pretty low, so the requirement of multiple hits per target is assumed. With the 12 gauge and any sort of Buck sized shot, multiple hits are much more likely and there's more momentum dumped into the target with each trigger pull as well. So the odds of a one shot stop are higher.
The opinion of 10,000 men is of no value if none of them know anything about the subject.
- Marcus Aurelius -
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