Have you thought about a long barrel .22 pistol like on of the Ruger Mk II's or III's or Browning Buckmark. Packs very small and is very accurate with a good red dot or halo sight out to 50 yards or better. With some decent high velocity ammo, CCI Velocitor hollow points, you have a good small game hunter and protection in a relatively small package. You can even wear it in a bandolier type holster that will accommodate the scope.