I used the Feather portable for the first time today (with a Feather blade) and my face was very irritated. I have a progress that I get great shaves with, what am I doing wrong? 
The Feather travel razor uses a different angle from the Progress so you may not be using and acute enough angle. Feather blades are great, but you can still get a harsh one from time to time. Try a different blade? That's two things off the top of my head...Hope that helps.