This is part of why I suggested an auto-indexing progressive press earlier. The scenario you describe is possible with presses like the Dillon 550, which do not automatically rotate the shell plate to the next station with each pull of the handle. It's very unlikely with presses like the Dillon 650/750 and Hornady LNL AP which do automatically rotate the shell plate. The 650/750 and LNL are more expensive than the 550 (well, the LNL is *barely* more expensive), but the fact that they auto-index makes them easily worth the premium in my mind. Add in the fact that they have one more station than the 550 and the benefits really start to add up. (The extra station allows for using both a powder check die and a bullet feeder, or separating seat and crimp operations, or other beneficial options.)