I would guess from reading every-ones post we are different types of survival, hunting being lost, or urban survival. In my younger days while stationed in Alaska, we flew in to do some dall sheep hunting, Well it was a great hunt but we were weathered in for a week extra, (airplane couldn,t land on the lake to pick us up) . We all had our rifles 300mag, 30-06 7mill mag, We couldn't travel too far in case the weather changed. They all laughted when I brought my S-W model 17. We used that to harvest ducks and rabbitts to live on.
My vote would be 22 cal in this application. In a urban application I would consider something different, or possibilably my encore with 22 barrel and 44 or 45.