"Survival" is a funny thing, if you are saying the scenario is just surviving, walking the wastelands like Mad Max, the .22 is good for small game and to have as a deterrent to the greatest threat ever invented, people. All the fun stuff, the good stuff, has been addressed, loads of ammo, light weight and a go get it effect on small game out to 150(ish) yards.
With that said...
I will always and forever choose a Mossberg 590A1 as an only gun, regardless of if Browning 50's were falling off trucks, if 1911's went on clearance or any other firearm out there...the 590 is rock solid, mine has ghost sights so its ready to chuck real lead out to 150 on to man size targets, it stops BS with a rack of the slide, that sound is enough for the price of admission when the poop starts to fly. I can mount a bayonet, why? Intimidation of course, nothing tells a curious onlooker there is pain coming like a racked slide with hog sticker on it.
Plus it will stop everything, in its tracks with 50 yards to put food on the table. Ask most Alaskan guides, the ones I know don't even carry pistols, they carry a 12 Gauge.
SO if you are talkin' mere sustenance survival a .22 would do you well, if you keep that on your hip and take the 590 out, chances are your survival rate just went up.