I was looking through some old photos and videos this evening and uploaded this one of a warthog I took in Namibia in 2007. Thought it might be of some interest.
We waited at a waterhole for about three hours before this one showed up. We watched several families of hogs come down to the water to drink. I passed up opportunities, waiting and hoping for a good one. We were about to leave for an evening of jackal calling when this big boy showed up.
I used a .308 suppressed rifle belonging to the PH, and the shot was about 130 yards. The warthog ran about 100 yards before falling even though the shot was good.