i once killed 10 pigs that went anywhere from 20 lbs to 40 lbs in one shot. they were bunched up in a creek wallow and i was using a mosberg 835 ulti mag and 3 1/2 in. mag sngle 0 buckshot hand loads. i also took 61 pigs and hogs off a hey pasture for a farmer in one weekend with my 223 wssm . took all those at extreme long range so most of them didnt even hear the shots that killed the others. around here pigs are like rats and roaches once you get infested with them you cant get rid of them and they root up everything . last year a farmer was killed when his tractor wheel fell in a hole rooted up by hogs and his tractor turned over on him.