If you're walking through the woods you have nothing to worry about from wild pigs. Unless you corner one, you 'll never even know it's there, they run like a lightning bolt at the first sign of people. But if you accidentally corner one in say a small cave or draw in the land where it can't get away from you...look out! They will go over you or through you, one or the other
Shoot fast or run FASTER are your two options...unless you can outrun your buddy whos with you, in which case you're good!