As I could not get this to work (IIS 7 Manager's httpRedirect):
web.config:
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<httpRedirect enabled="true" destination="http://localhost/" exactDestination="true" httpResponseStatus="Permanent" />
</system.webServer>
</configuration>
I'll just be using a line of Java Script at the top of the .cshtml:
<script type="text/javascript">window.location = "http://localhost/"</script>
I'd prefer using the httpRedirect, however this is the best workaround so far that does not require an application redeploy.