For the first time, my shooting partner used his Star sizer in my presence. I had no idea he had one because tools not in use are covered. During the course of our brief conversation -- I was on my way home -- he said that he preferred to use his RCBS Lube-A-Matic 2 or Saeco Lubri-Sizer when installing gas checks and strongly preferred his Star for plain base bullet sizing and lubricating.
I didn't query him on what difficulty he avoids by not using his Star with gas checks -- my error. I will appreciate information about this because I am shopping for a sizer and I cast gas checked and plain base bullets.