Yup. As said before, these things can be picky! I had all sorts of problems and started trying out the Remy bulk and my problems went away. Went back to some of the other stuff and the problems came back.
I believe a lot of it depends on what and how the firearm was broken in as well. Mine was bought used so I couldn't tell you about how it was broken in.
What works for someones may not work for others as well.
Another hopefully helpful linky - http://www.spentbrass.com/pistol/walther/p22/ammo.php
To answer your question as accurately as possible - I was getting FTEs, DFs, and FTFs.