I have an SWFA 1-6 HD. I am just getting into shooting and have setup the scope properly with regard to eye relief, parallax, etc. I closed my eyes, laid my head on the stock and opened them to ensure i'm looking through the middle of the scope. I did most things right i think and probably better than most people mounting a scope. However, i noticed that when i close my left eye and look through the scope(i am right eye dominant), the reticle blurs. But when i close both eyes then open both eyes and look at the reticle it is perfectly clear at both long and short range. I understand the SWFA is meant to be used both eyes open on 1x but is it ok to use it both eyes open on 6x? I'm much faster with both eyes open when using 6x and experience a blur-clear-blur effect with just my right eye, this blur-clear-blur is absent with both eyes open.