I've had multiple Leupolds not hold zero, not track properly or not return to zero over the years. All were variables though. I switched most everything I had to fixed powers and this issue went away. The straight 6Xs, whether x36 or x42 have been great for me. One would throw an occasional round about 6 inches to the right at 100 yards, but I am still trying to figure out if it is the scope, the rifle or me.
