I just got a set Forster gauges and the directions said to remove the extractor but didn't mention the ejector. I removed the extractor but could feel the ejector putting pressure on the gauge. Since the gauges have a rim similar to a real shell, I tried it again with the extractor in place and it grabbed the rim and ejected just like a shell casing does.

Now I'm wondering if the ejector is what really needs to be removed to properly check HS?