My first concern and biggest is that it is a rimfire round. Now as for: It has killed more people blah, blah - that is completely irrelevant; the goal is to stop the assault. The I wouldn't want to get shot with X is also a pointless statement; I don't want to get shot with anything, that doesn't make it a good choice. That phrase should never be uttered again! OK back to the point at hand I would feel much better with say a 32 than a rimfire and it doesn't have to be the smallest one out there. In the end you do what you have to but I would look for a centerfire solution if you can.

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K & N S&W revolvers