So I know a lot of people are having a tough time with this challenge, I was to, but I discovered something right in the middle of almost putting my controller through the wall. There's an easy way to do this quest without being a quick aim. Let me say first...ignore the flock of chickens that is let loose. You do not need to try and shoot these guys in order to get a gold in this. You only have two targets in this challenge. There's one chicken that appears on the ground and one that appears on a post a little to the left of this one. Both these chickens are never picked up by the wondering chicken grabbers. What you do is shoot the one on the ground then wait a couple of seconds and shoot the one on the fence then go back to aiming at the spot where the one on the ground spawns and shoot it. After that you wait for the one on the ground to respawn and shoot it again, wait a few seconds and shoot the one on the fence and then go back to the area where the one on the ground appears and shoot it when it spawns. Keep repeating this until you run out of ammo. You'll counter will never reset and you'll easily get gold in it. Hope this helps you out.