If you hunted that with a bow and arrow, or a bowie knife, I'd have a bit more respect.
A pistol should be in the same category as a bow. Although it was a .50 caliber pistol, you can see that it took many rounds to bring the pig down. Pistols aren't exactly easy to shoot, either, and a .50 cal pistol warrant a whole new difficulty level, especially if running behind the pig for 3 hours. I went to a range and shot pistols (9mm and .40 cal) back-to-back for 20 min and my arms were sore the next few days (I'm a rifle guy). I couldn't imagine running then stopping then shooting then running then stopping then shooting (rinse and repeat)... Stress like that, unless you've adapted to it (think Army Ranger or Navy SEAL or Olympian), and really screw up a shot grouping.
Respect is due and given from my direction. A few more runs like that, and that boy should lose 50 lb!