I was going to add this to information to the original post when I made it, but I just didnt think about it anymore.
But yes, Mach1 is right...
Its quite simple to understand really, but you might need to just try it yourself to get it into perspective.
The eyes play an optical illusion on the mind, and by leaving both eyes open, and looking through the optic, the outside eye, "The one not looking through the optic lense" will still see the dot visible on the target, even if the front lense cap is closed or obstructed by an object, like a feed neck for instance, should you have one in the center or the marker.
This is a benifit of having a both eyes open sight of 0 power, vs. a magnified version.
This "both eyes open" deal, takes a bit of practice to get used to for some people.
Its not natural to look though a close, small object, thats smaller than both eyes plain of view, so you'll naturally want to close one to concentrate on the one in relivance to the object.
The best way to describe how to use this tactic, is to imagine the sight isnt there at all, and look though it, and past it with your focus of both eyes on the target.
Act as if you only notice the target, and the red dot will apear on it, and the sight will virtually dissapear in relivance to your view.
This post has been edited by WarCowboy: 21 November 2007 - 08:30 PM