The Russians aren’t stupid. They weren’t testing - they were demonstrating it. They already knew very well it could stop bullets when they put a person in it.
It was probably an old Soviet “marketing” video intended to get the approval of some high level apparatchiks, or show off what the factory had developed.
“The Russians aren’t stupid. They weren’t testing - they were demonstrating it. They already knew very well it could stop bullets when they put a person in it.”
The video shows exactly that. A progression of tests, with a final test involving a human inside. Also a fine way to let pilots know they were in a modern Il-2 Sturmovik and they can settle down and press in attacks.
I bet this is shown in transition training to new pilots.