moving or holding still, sideways as frontal, partially covered as fully-exposed. So it's BS to just "assume" that you will even get a 12"x24" mark as a target. All too often, all you can count on getting is a head that is bobbing around cover. Such a mark is easily missed, at a mere 200m, by anybody, using any realistic fighting rifle, with any scope, and from any firing position, with any load. A guy that knows enough to use cover knows better than to leave his head exposed for more than 2 seconds at a time, and he also knows better than to expose himself at the same place, 2x in a row.