Sorry but you need to learn about things before you make a comment.
As soon as I took the glass off I hit every one. It wasn't until I put the glasses on that I couldn't hit.
I take it you don't understand the prism effect and how you have to aim in another place to shoot fish underwater ?
here is some information concerning refraction and aiming points to compensate for such. I believe their eyes are in alignment with the arrow and bow and fish, but they have to shoot low in order to hit the place where the fish actually is
http://adventure.howstuffworks.com/outd ... shing2.htm
Everything is shifted, except for where the squirrel really is. That doesn't shift.
I had a scope shift point of aim 4 foot. Proved it by wedging the gun in a tree fork and watching how the field of view and cross hairs acted.
I suggest you do some research on parallax. Scope manufacturers spend lots of money to get their scopes to be parallax free at x amount of yardage.
With our bare eyes, we have learned via our wonderful brain to compensate for the optical shift through the atmosphere. When we are tricked via glasses or trying to shoot fish under water, we have to learn another way to compensate.
Maybe Googling some info up would be appropriate. Eh ?
Have you ever shot at 1000 yards with Iron sights ? I have. I understand enough about the whole process to understand that we are tweaking the sight adjustments to compensate for the atmospheric distortion of where the target physically is versus where we see it to be.
On a hot day you can actually see the mirage lines through the spotting scopes.
now what I have found out doing further research is that they are not optically centered. they are good enough for doing machine work (that is what they actually are, a good pair of factory safety glasses) but they are not precise enough for shooting.
buried in the text of this page
http://www.starreloaders.com/edhall/nwo ... urvey.html
is a survey on the use of iron sights. in the discussions are how many clicks of sight correction are needed as the sun changes position.
So to put it bluntly, regardless of how much in alignment you are with the shotgun components, if the target you are shooting at appears to be 8 or more inches higher than where it looks to be at with the naked eye, you are going to over shoot the target because simply being in line with the gun and the image of what you are seeing doesn't correct the optical displacement that you can achieve by moving the components of adjustable sights to compensate.