Ms Teri, I'm not competing with my rifles, well , except will myself. Not much in the way of competitions around my neck of the woods. My comments were based solely on how mirage blows my feel good groupings up to fire starter paper . If I were out west where it was normal to shoot 500+ yards anytime I felt the urge, I'd most definitely deal with mirage in attempts on MOA steel. I just like sending rounds through the same hole with repeatability. Mirage takes that off the table ......for me , anyway.After reading your comments I am somewhat flabbergasted, ( Yes an old lady term but since I am an old lady it is acceptable) that you would simply quit shooting when you encounter mirage. Mirage can be and is your friend if you understand what it does for you and how to use it effectively to help with your long range shooting. Mirage is a good way to determine the wind direction and speed across the area you are shooting. It's not unusual to see mirage drifting in different directions as you look down range. What is it telling you? The direction and wind velocity as you look down range. It may change a few times between where you are and where you are looking. It also will cause you to determine that you need to change your elevation settings as it will make the target seem to drift upwards which will cause you to hit low as you try to follow its rise., Take the time to learn to read mirage and your scores will improve proportionately. Don't quit when you see mirage, use it to tighten your groups and scores.