The star design, as you probably know, did not originate at the Star Machine Works. Rather it appeared in the patent literature of the 1890's in a patent assigned, if memory serves, to Winchester. Thus the Star was a scaled down copy of an earlier Winchester machine.
The original Star patent was for a machine to load pistol, rifle and shotgun shells. To the best of my knowledge no shotgun machines were ever made.
Star did, of course, make a few straightline progressives. Perhaps as few as three. Maybe as many as twenty. I sold mine, probably seven years ago, to Ron Peterson guns in Albuquerque. If you are interested you might call Ron and ask him if he still has it. You'd have to talk to Ron himself.