Had an interesting experience white tail hunting in farm country last week. I was in a tree stand and another member of the hunting party was in a shooting tower an estimated 700 yds. away. I hear him shoot and see 2 deer running. Suddenly they turn and cut between us. They were a very long running shot for him, but he continues firing. That's where it got interesting/scary for me. I hear a bullet zing by me. Then another zing, followed by another!! The first ricochet was interesting and the others ramped up to scary fast! By this time, I couldn't give a rip about the bucks and was trying to get out of the tree stand to get behind a tree! The shooting stopped at my frantic waving and the "not big enough to be legal bucks" ran off. Another classic case of buck fever! I haven't had much of a conversation with the shooter except to find out that he was shooting 150gr. 7mm Mag rounds. I'm sure they were ricocheting off the ground water, but I clearly heard them coming and going past me. Finally my question.... Has anyone heard of any research to determine how far away such a ricocheting bullet can be heard? I can't help but wonder how close they were. I did some googling on the subject but without much success. Thanks.