It looks like that rifle was set up for a rather longish scope like the old Weavers or Redfields from the late 60s-early 70s. With the ring spacing you have on that side mount, you will need a long scope if you want to use the same mounts. Or you may be able to find a different ring setup that will hold a horter scope far enough back to be usable.
Never try to educate someone who resists knowledge at all costs.
But what do I know?