Hi again,
I was checking the weaver style bases supplied with my mod 11 package rifle.

Each base is marked '61S'.

Weaver recommends the 61 bases for the rear but the 46 on pre-2003 models BUT both 46 front and rear for newer accu-trigger models and the Stevens 200. So I assume then that the inclination for the scope plane is not in the base height differences but from a height difference in reciever bridge rear and reciver ring forward?

Confused ???

Cheers