I think that seller has visited all 57 states. Marksmanship of that degree is hard to find these days. One shot kill at 700 yards in a 30 mph wind. I bet he sighted an inch high at a hundred yards to make the shot easier. Too often fellows these days take the easy way out. A real man would have sighted dead on at a hundred and do the math on his fingers and toes like a real man.
I have shot crows at extreme range with a .22 and can tell you with a straight face that if I had bought a Lotto ticket that day I would have had a better chance to hit it than the crow. The bullet has to land somewhere and sometimes it lands where you are shooting. Most of the times it lands somewhere else.