Don't jump to judgement about Iceman69 and his long range hunting/shooting.
I think he knows what he is doing. Iceland has some wide open country. If he says he can do it, I believe him.
Those long range marksmen with their purpose built rigs and premium bullets can hit small targets at half a click all day long.
I would not be surprised if iceman has a better one shot kill ratio on medium game at 500 meters than most cape buffalo hunters have at 50 meters.
Judging other hunters hunting style and capability on hunting forum is seldom a good thing.
I have talked to a number of seasoned dangerous game PH,s about how common it is for them to guide poor shots on cape buffalo hunts. Several Africa PH's have told me clearly that "half of the North American cape buffalo hunting clients cannot hit the shoulder of cape buffalo standing broadside. at 50 yards."
I just watched another top quality, high definition video of the North American hunters each wounding their cape buffalo at close range and losing it. Yes, 50 yard shot and hitting the buffalo in the guts with a 375HH rifles is weird but not uncommon. ( The Heart lung kill zone of a cape buffalo is about the size of a volley ball ! )
iceman69, Hair on 'ya! Happy hunting. Brian