An automatic rifle is a "machine gun". Hunters, by and large, don't hunt pigs with machine guns. The term you seek is semi-automatic rifle, which is a rifle fi

An automatic rifle is a "machine gun". Hunters, by and large, don't hunt pigs with machine guns. The term you seek is semi-automatic rifle, which is a rifle firing one shot with each trigger press. These are what hunters use. In North America some persons are allowed to use machine guns to shoot pigs. But doing so is a challenge from both an efficiency and a safety standpoint: https://www.houstonchronicle.com/news/houston-texas/texas/article/feral-hog-helicopter-hunt-17127504.php https://www.houstonchronicle.com/news/houston-texas/texas/ar... Except among mass killers, the machine gun is hardly the tool of choice for hunting (any animal including humans).