Lot of variables at work here. FMJ at pistol velocity is going to be a marginal performer. You did the right thing in finishing that varmint off humanely. I understand hogs have a gristle plate that protects their vitals to a degree so I would have to find them in close range to consider even a rifle shot. No matter that they are an invasive pest and threaten every other species that lay eggs or rear their brood on the ground.
