The only thing that's needed is a shiny Leupold in 2.5-8-9-10x.. range with objective diamemter limited by ring height. Fine American "Sheep Rifle" needs a fine MODERN American scope.
The only things I have in reserve is 2-7x rimfire special by Leupold and 2,5x B.Nickel 'Supra' Marburg. Next to 'Ghost' iron, the 2,5x20 with German reticle is perfect choice for stopping rifle , but next to useless on "high plains" sheep/goat rifle.
There is no point in fixing what isn't broken.