I can't watch the video, but i would geuss with the 800+ yard shots. They are using a 50 BMG. There was an article in this months F&S about 50 cal long range hunting. This man and wife team where hunting elk with an LAR Grizzly single shot. The guys who shoot these long range matches are getting 6" groups at a 1000 yards or better. The best ever was a 2" three shot group at 1000 yards.