Here is a warning to those who shoot with both eyes open-wait till you are over 40 and then you will have to shoot with one.
This happened to my hubby and then to a friend of ours. One season they both continually shot way right. This only happened in a hunting situation, neither one of them could make that mistake practicing! Once they discovered the problem closing one eye made all the difference in the world.
Just remember that your eyes get old too!!!!