Wild hogs are tough, thick-skinned, and often traveling in groups — which makes caliber selection one of the most important decisions you'll make before heading out on a hunt. The AR-15 platform is a favorite among hog hunters for its accuracy, quick follow-up shots, and modularity, but not every chambering is created equal when it comes to putting down a 150-pound (or 250-pound) boar quickly and ethically. Below, we break down the top AR-15 calibers for hog hunting so you can choose the r …