22 Mag Ammo
While not as widely produced as target-oriented rimfire calibers, .22 WMR ammo can be had from a variety of manufacturers at a reasonable cost. CCI TNT and Hornady V-MAX fragmenting hollow point ammunition works well for varmint hunting. This caliber is sometimes used for compact concealed carry, although its effectiveness is limited in this role.
$16.99$0.34 per round