Also keep in mind that LEOs almost never have to make those type shots. They are likely to have a marksman for certain standoffs but those are generally well with 300 yards and likely less than 100 in urban areas. Military applications have merit to consider but remember that beyond a certain distance with active combat engagement, going out to 800, 1000, 1200 yards to hit an enemy soldier, simply scoring a hit sufficient for removing him from serviceability is a win. You owe it to game to kill humanely, not wound, at whatever distance you choose to shoot from.