Thanks gentlemen, You are right about the placement of the express sight. It was more the aesthetic look than functionality. When an older man see's a good looking woman his brain switches back to when he was 20 years old but his body parts remain old. Same with placing the rear sight, I was thinking 20 years old. You are right, I can't see the darn thing anymore! Had a hell of a time regulating it. It's certainly a point I'll remember before building another one. Scope relief was figured in before the quarter rib design and the owner wanted it mounted as low as possible. Placing the sight in front of the scope would have required high rings if he changed to a bigger or longer scope in the future. It has lots of relief where it is placed and can still be moved ahead. Other brands of scope may pose a problem. I have to lean into it at 6x to get full field of view and so does the owner. It's certainly a point I'll remember before building another one though. Geez, I'm repeating myself. I found many more points to remember, one being that Rugers systems are a lot more complicated than a Mauser.
Duncan is northwest of Seattle on Vancouver Island.