All of the necks/mouths are fine.
The cases fit in the die set #4 shell holder when they were decapped.
The cases fit in the Lee 223 REM Case Length Gauge #90114 when I trimmed them.
I tumbled them again to remove lube, now they won't fit any shell holder.

A good .223 cases measures .372 just above the groove. These bad cases measure .374 and .375 diameter. I need to find sizing dies for cases that measure .375, .374 and .373 diameter. I don't think the Lee Universal decapping die will size, or will it?