7.62x39 ID request

Here a b/w image from the files of Herb Woodend which are available to IAA members here on the server. It was in a file with random ammo photos and unfortunately no comment or description was attached.

As per the overall appearance the two rounds on the left seem to be short range loads and as per the particular shape of the one in the centre I see similarities to the large row of Finnish PT and brass cased short range loads they experimented with.
The far right one seems to be a known Finnish short range load.

Anybody to ID these? Does anybody own the depicted cartridges?