Not too mention most other people will be opting for the larger caliber 9mm, .357, .40, or .45. All are good weapons, but the .22 is just as effective up close and personal (where you'd use a pistol anyway). Also don't overlook a pellet gun. Once the grocery stores have all been raided and there's no more food, you can use the pellet gun to hunt small game and not draw the unwanted attention of the zombies.
But when a long train of abuses and usurpations, pursuing invariably the same object, evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new guards for their future security.
Translation for the intellectually challenged: If the government screws the people too much, it is the right and duty of the people to revolt and form a new government.