Interesting. If the hole spacing is 7½" it would be a simple matter to mount a Unertl/Fecker/Lyman (if the bases are compatible and if not, have custom ones made up). The spacing is compatible with the 7.2" required of those scopes to achieve 1/4MOA per click adjustment offered by those scopes. If the size of those vintage target scopes is a deterrent, scout up a 4x or 6x Small Game version of the Unertl and Fecker- rugged and short with excellent optics (but not tremendous field of view- but not worse than hunting scopes of the 30's-40's).
