Shooting running game is tough. I can assure u he has missed a bunch of times to get that good. In order to shoot that good u have to be very familiar with the gun and ammo together. Change either one and it's a learning experience. He gave some good pointers at the end also. Surely impressive shooting.
I think I heard him say something about Olympic shooting so you can bet he gets a ton of practice. I know they still shoot running boar competitions there but you'd never know by the T.V. coverage. I wonder what caliber he's using?