Get a Savage 24 or the new 42. 22lr/.410 is good but the old 24 came with a lot more options.
Springfield Armory M6 Scout is a good gun. They came in 22/410 and 22 hornet/410 (which I thought was a better choice for a survival gun). I like the shotgun option in a folding combo gun. Small game, defense, and if you got desperate, mid-larger game. Not sure what these go for now, or even if you can find them.