Finally dug some out and tore down for measurements:
Chinese /26\, year 2: 0.437"
Romanian, 1968 'EF' prefix: 0.432"
Chinese /26\, 200k: 0.440"
Russian 1950: 0.447"
That's a surprisingly small spread of 0.017" in my opinion.
I didn't have time to pull a Yougoslavian or Albanian. Hopefully tomorrow.
Also, short lug and pinned barrel late model Chinese are worth looking at too. Hope this helps.