Our butchers use. 22 I use. 22 to hunt. Only reasons for bigger caliber. -range. But sub 100m it isn't a factor. -impediment.. 22 is easier to deflect by branches etc. -a near miss can still kill like when aiming for shoulder miss heart but hit major arteries with splash. -imagination. Honestly. 22 is the best prepper ammo. Super cheap. Can store oodles of rounds