Hi Soren,
Welcome to this Microsoft Project newsgroup
You can't set the default. However, you can try creating a View. Set the
view as you want it and then View/More views.../Gantt Chart/Copy... give it
a new name/OK/Apply and save your project. Then use the default Gantt Chart
to zoom around and when you want your special view, go to the View menu and
select your special copy. However, don't zoom in your special copy, or if
you do, don't save the project.
FAQs, companion products and other useful Project information can be seen at
this web address: <
http://www.mvps.org/project/>
Hope this helps - please let us know how you get on

)
Mike Glen
MS Project MVP