you ever hunted piggies before bro?
when they decide to come at you, that .223/5.56 is gonna feel pretty inadequate, and the shoulder gristle will turn that popgun pellet aside like you were throwing tennis balls.
my grandpappy alway said "Boar huntin is just like bear huntin, 'cept pigs is meaner and smarter."
i wouldnt hunt deer with a 5.56, even with good quality dumdum bullets. they just dont deliver on anything over 150 - 200 lbs.
AR's are like hippie chicks, fun to play around with, easy to handle, and a little bit high maintenance, but they will not put meat on your plate.