The Safety Cam is designed to work with only rimmed cartridges, like .38 Special. At station #6, no taper crimp die would be in use and part # 67U (Shell Floor Base Bushing) would be required to allow the completed cartridge to fall through the base into a catch bin. At station #5, both the bullet seating and case crimping operations would take place. If case crimping separately from bullet seating is desired, then station #6 would be configured as if rimless cases were being reloaded, as described below.
This manner of reloading rimmed cartridges goes pretty fast, even without and indexer. The #39U Safety Cam will prevent the operator from pulling the handle more than once without indexing the #13 Shell Plate, and allows the finished cartridge to fall downward through #67U and into a container.
When the machine is set up for reloading a rimless cartridge, like .45 ACP, the #39U Safety Cam will not be used, and part # 68U (Shell Floor Base Plug) would be installed in Station 6. Since a rimless case cannot clear the Shell Plate to fall down through hollow #67U, a solid #68U is installed instead to support the case. The case must be mechanically ejected or manually removed in order to properly index the Shell Plate after completing an operational cycle of the handle.
Star worked on a uniquely designed Safety Cam that would function when reloading rimless cases, but never put the design into production. Bruce Williams may have pictures or examples of this different type of Safety Cam.
