Don't forget the adjustment screw on the back of the slider plates that move the plate out a tad. Made a huge difference for me when I was having problems with my semi wadcutters. just d a bit at a time when you make changes either in or out. My round nose bullets were doing great a bit further out... the semi wadcutters i needed to move the plate in.
And yes. give the feeder all the angle you can get!