I would not hesitate to use these again for a 600 yard match. They were more accurate than me. The vertical was very good for box ammo at that distance. The highlight of my day was, the 1st shot. I chrono'd them to see exactly how fast they were the weekend before and got a good 100 yard zero. Plugged all the environmental info in to my app and came up what it said. My first sighter was a 10.

That made my day. :)