Ross Magnaldo wrote:

If I am flying a radial with a cross wind, should the HDG bug be on the
radial or should it be on the estimated course made good with the wind
correction?

When using NAV mode, the heading bug should precisely match the desired
radial which is selected by the OBS. The airplane will then seek a heading
which makes good the selected course, and that may not be heading selected
by the bug if there is a crosswind.