I have a Star and I can not give you any advice on other lubers.
But when you run the heavy large calibers bullets threw the Star with Lathesmith dies and punch's. Some times it smashes the slugs and they will not run threw the machine if you use the GC bottom punch.
I had to experiment a little bit and found out if I used the PB punch even with the GC's the machine runs flawlessly.
Again I can not comment on any other luber . I have never used any other
