Traps may be their best bet, given what I saw.
The guy who was shooting off the four wheeler hit one and scattered the rest.
Odds are that herd won’t come back for a while.
Better to bait them, en mass, to a trap and blast them in there.
Not sure I’d want to eat the meat, though.
Two year ago our group took two feral hogs during deer season. Some of the best pork I every tasted. To be fair though they get a lot of corn around here. The meat was darker and tasted almost like a beef.