I'm pretty careful to make sure I know exactly what the law allows in whichever state I happen to be hunting in. To that end I haven't ever intentionally broken a law. However I did accidently once. Happened like this:

My Father and I were hunting on a ranch in eastern CO that belonged to an old family friend. This particular ranch had some really good whitetails on it and I was looking for a good buck. I passed an some small ones the first day and about 10 in the morning on the second day I saw what looked like a good buck bedded in the sagebrush at about 150 yards. I shot him in the middle of the throat patch.

When I walked up to him I was surprised to find he was just an average 7 pt because he looked bigger. I set my rifle against a sagebrush and that's when I saw the 2nd buck, a decent 6 pt. He was laying directly behind and a little below the first buck. He also had a bullet hole under his left eye. What I think happened was that the antlers on the bucks lined up close enough to look like one good rack.

We knew the local game warden and when I called him he asked how many tags we had and when I told him both dad and I had tags he said just tag the bucks and take them home. So even though I killed both bucks, which was a violation of CO law, it wasn't intentional, we had tags for both deer and the game warden was notified. I don't know that we could have done anything different but I still feel a little bad about it.