Cops and 911 ain't going to help you no matter where you are, they just clean up the mess and try to catch the BG after the fact. Chris
Amen...one caveat, though...the cops don't clean up the mess. There are services for hire that specialize in the cleanup of crime scenes. Other than that, sadly, it's usually a do it yourself proposition.
I'm glad, really glad, to see so many advocates of the rimfire answering up. I'm also glad to see alot of "simple is better". The fewer moving parts, the better. I have no doubt, RunningBoar, that, push come to shove, you could hand-engineer replacement parts for that NEF from expedient materials.
I do think the question needs to be less vague. I've been heavily criticized in the past for carrying a NAA Mini-Master when I go afield but it fills the stewpot for me. Recently, I have begun carrying it with the .22 Magnum cylinder loaded...perhaps a paranoid homage to Bill Jordan, who once touted its effect on flesh as "wicked". If this hypothetical situation has me going "beyond Thunderdome", however, I'd want something with more reach, more punch, and more spare parts...my Garand, maybe...perhaps a Nagant. Unless things have gotten seriously effed-up, however, it's hard for me to justify a long distance weapon.
RunningBoar may have hit on the best compromise with his NEF. Simple, easily fed (12G can be found almost anywhere in the world), good combination of punch and intermediate range, lightweight so it can be broken down in the rucksack, doesn't carry the "assault rifle stigma". Thanks RB, I think you just pushed me over the edge on a purchase I've been contemplating for awhile.