As I said, I obtained the info from a late correspondent from Finland, Mr. Kekkonen, who had a good knowledge about Russian rounds.
You must remember that when the cartridge was supposed to be in use, the “official” hunting parties played in USSR only for the Party 's top notch comrades, were quite a special comedy, as well-fed and almost tamed game was released at very close range in front of the “hunters” (who were mostly helped by massive ingestion of strong liquor !)
At least, this is what Kekkonen said… (as an old-fashioned Finn, he had no special compassion for these Russian fantasies!)…
That’s all what I can say, but the round here pictured seems legitimate to me.
In the same area of short stories, General Francisco Franco Bahamonde, from Spain, even suffering a hard Parkinson disease, still had a strong attraction for hunting…that he practised regularily sitting down in an armchair, pheasants being released just in front of him… Then he said “Poum Poum” (!) and one of the attendants gave him a loaded shotgun , so he could fire at the game…(this is authentic, not a fairy tale…)