CRS,
The gun was proofed using 400 grain bullets and the same powder charge that the service load uses. It was proofed and regulated with Hornady jacketed bullets. The service load uses 300 grain spire points. I don't believe in using factory loads to do proofing or the regulating, I want to use a load that can be duplicated and to be able to know what the pressure is on them.
If I remember correctly, it crosses at about 50 yards which puts you about one inch apart at 100.
You have a good eye, I had not yet put the rear sling swivel on it yet when those pictures were taken. The grip cap was not blued yet either.