I've seen videos of people being shot at by a long range sniper. The target looks around a bit confused when the first shot goes by (it maybe hits something nearby) and are diving for cover soon after the second one. You would only get several shots if you had a pretty clueless target.No I want to say it was like the 9th shot.
At that distance the target would never have any idea where the shots were coming from, about 7-9seconds after the shot. The sniper could shoot all day long easily, of course against those foes.