Can you use standard thread ring gages for a reduced minor diameter external thread?

The external thread is 5/16–24 UNJF-3A, has a modified minor diameter of 0.2785″ max.

Some sources say thread ring gages don’t check minor diameters at all, some say it does check the max minor diameter. It’s insane, considering society has been working with these for like over 100 years…If both go & no-go thread ring gages do not check minor diameter, then I can just use the standard 5/16–24 UNJF-3B thread ring gages.