Wheel hub questions for 10 inch drums

While replacing the front end I'm now on the the wheel ends. Front brakes went good but now I'm on the wheel hubs. Problem is the old studs where swaged and because of the it stretched out the holes on the hub. Only found that out after trying to install the new studs and they sit loose in the holes. Has anyone every tried a bigger nurl or is there any other way to save the old wheel hub? The vehicle is a 1972 plymouth duster with 10 inch drum brakes.