Rule #2 of Gunfighting is that incoming rounds have the right of way. Your first move when things go wrong, even on a wild boar hunt, is to get your butt around a tree, and up in it. Going for that second gun if a boar is charging you is real stupid! Once you are up the tree, you can pull the piece, and try to dispatch him, but take cover, FIRST. On my second boar hunt, we took 7 boars, and had 3 charges after they were shot. One killed by a shotgun slug, One by a .54 T/C maxiball, and the third killed by muliple shots from a .45 auto! We tried to tell that man he was using the wrong gun, but he had to find out himself. Do not expect one shot to stop a charging Boar! We did have one boar killed on the run with an arrow that passed completely through him, taking both lungs, and some of the major arteries, but the boar continues running for about 40 feet before skidding to a stop 10 feet from a man trying to take pictures of the event! He had not figured out that he was standing on the same path the boar was using to try to escape. It is good you are thinking about what you are going to do if things go wrong, now. It shows that you are likely to be thinking if and when it does go wrong. Make sure the rest of your hunting party is also thinking, or someone can get hurt. When I was hunting boar, we all made a decision about which tree we were going to climb after firing the shot, before we took it!