2 1/2” hulls ride the carrousel through the 4th stage first crimp.
After that it's 1 pull 1 shell (sort of). Switch to the two crimping stations on a single stage lifted machine.
Half as many pulls as loading on a single stage exclusively and zero slapping of the charge bar.

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]