You better be a good shot with that crossbow. If you’re not your family will have to cut open the hogs to find your remains. I’m not exaggerating.
Shot placement on hogs is different than deer. A shot behind the ear doesn't drop them. Mature boar have a thick layer of hardened gristle over their ribs between the skin and muscle. A heavy crossbow might penetrate it, but an ordinary compound hunting bow won't unless it draws 80 - 100 lbs.