Depends how big your hogs are. I would suggest a 22lr for hunting the little critters (rabbit, squirrel, etc...) with intention of eating the meat. 22wmr or 17hmr for general "small" pests (raccoons and such) because of the extra lethal range and the extra damage done to the animal when compared to a 22lr. But IMHO for hogs, big or small, 223 is the bare minimum. In reality, anything will work with proper shot placement. But I personally like large wound channels for pest control
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