Jim, I really enjoyed your article and I would agree with you all day that the peep is a huge asset versus the conventional buck-horn open site.
I have used the Williams FP site on many different rifles. I am so scope inclined I really do like the adjustment 1/4 min clicks the site offers.
One thing I have done also is change out the front sight to a Williams Streamlined ramp - install a fiber optic sight and then cover the sight with a Fire Sight Hood... Again this helps me think/visualize that I am shooting 1x power scope.
This is what my front sight looks like
So with this in combination with the peep sight when look down the barrel I see the outline of the hood with a dot in the middle of the hood. With this set-up and using a 6 o'clock hold on the target - I feel pretty darn comfortable to 150 yards on a Palouse Prairie Whitetail. And even farther on a big bodied elk.
Besides the Williams FP, which I feel is one of the most versatile peep sites, I have begun using a NECG peep installed on a Weaver style scope block.
This peep certainly is not as convenient to sight in but really is an aid to me to be able to remove it and install a regular scope for the regular rifle season here in Idaho. I very seldom use my center fire rifles any longer. So with the ability to thumb screw the NECG off the scope block and drop the a scope on I feel I get the advantage of having two different rifles. I restricted use Idaho ML and a modern inline for use during the regular rifle season.
Again a great read - your article with pics was something I believe more hunters should take advantage of.
thanks - mike