The 650N works on six shells at once. With every stroke, a reloaded shell is completed. This is the ideal press for the person who wishes to resize and inspect their shells as a separate operation. It has three crimping stations. The first station starts the crimp, the second closes the crimp, and the third places the taper on the shell for proper feeding in a pump or automatic. Its Automatic Primer feed is standard. NOTE: The MEC 650N does not resize except as a separate operation.