Were did you shoot the hog ? in the head ? did it stand still while you were aiming ? One of my uncles had a slaughter house in Medley Florida, after HS I used to go and kill cattle or pigs (some times for free) one sits on top of an enclosure, cow is driven in, head sticks out and you shoot it with a .22 LR from the siting position on top, head shot, gates open cow drops down NEXT, pigs were the same but smaller enclosures, most times it was with and electric rod though. I was usually given a brick of 500 .22LR and two or three rifles, they get hot. And for fun sometimes we used to shoot them while in the enclosure, from 9mm to .44 Mag, uncle didn't like the .44 too much meat loss, I'm bold headed now, but I have shot more animals than the hair I had when I was 18-19 YO.