A lot of primers from abroad are tight. The Tula primers for example. CCI was like that before they revamped their primer line in 1989. I could not get my Dillon Square Deal to seat the old ones to flush with my case heads no matter how hard I tried. It's not a problem now, though. It turns out it was due to burrs on the lips of the primer cups. CCI figured out how to eliminate them.
This 2017 article suggests Ginex had a problem with size early on, though.
This 2017 article suggests Ginex had a problem with size early on, though.