I have a Dillon 550B as well.....
Dillon's Roller Handle
Dillon's Strong Mount
Dillon's Aluminum Bullet Tray
Dillon's Empty Case Bin & Bracket
Fabrication's Light
@frogfurr, I watched the YouTube videos on the Double Alpha Academy mini case feeder. In the second video, the person warned that you need to watch the brass feeding tubes and turn them when one of the four tubes empties. Perhaps you can share your experiences with it.
So, when I heard that, the first thing I thought of was even if one of the tubes goes empty, there are still about five pieces of brass in the orange tube so a case should still be fed into the shell plate when you make the next stroke. Otherwise, if no case is fed into the shell plate it is possible to double charge since you did not rotate the stations.
Is my understanding correct? Does it really save that much time since there is time in filling the tubes, to begin with?