The weapon is certainly up to the task.
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This is especially true if your using a center-hold on a target. For a person like me, though, who uses NRA/CMP 6'oclock hold on the aiming black at each distance, you have to recalibrate your sights, to hit the center of a, say, 15" x 15" square at 500 yards. It's not difficult, as long as you know the difference (in MOA) between the bottom and the center of the black at each distance in competition.
Shooting GROUNDHOG at 500 yards, with your rifle zeroed using 6'oclock, is another thing all-together. Aim center-mass, and you'll end up flying about a foot over the critter's head. Unfortunately for people like me, you can shoot targets at long range, or you can shoot critters at long range, but not reasonably both. Unless you're comfortable with going back and forth between clicks, it's better just to use a scope for one and irons for another.
Or if you have the money, get another AR [:)].
Jewbroni~