A few points..
1) A larger caliber isn't gonna stop a zombie - those scenes in movies where the guy flies back 20yds because he got hit with .45ACP are just that - movies - irl a hit with any non-artillery caliber wouldn't move the victim 20-thou
2) A .22lr in the brain will kill a zombie just as dead as a .50BMG in the brain
3) .22lr is a lot lighter so I can stash more rounds and carry them around than the other poodle-shooting caliber of choice - .223
4) .22lr is quieter so less likely to attract a horde
5) Still got plenty of 7.62x39 for protection from fellow-humans
6) .22lr has zero recoil, which makes for faster followup shots
You know .45 breaks bones right?
People has survive injury to the brain, i highly doubt a .22 will incapacitate them.
When bones are broken i know they cant use that limb.
A .45 will not push u back a few yrds but it would hurt even if u have a bulletproof vest. There is a larger mass travelling, it has more energy than a smaller mass
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