It looks like Russia’s Kalashnikov Concern in getting in on the “let’s shoot stuff to see if it works” game.
In the above short, Kalash’s Izhevsk-based technical advisor, Vladimir Onokoy, runs an AK74 to see if 5x45x39mm will work its way through a handful of what looks like Russian kale. Drilling with 7N6 steel core (ah, the memories…) he soon visits keyhole city.
As a control, he repeats the test with an AK-104 in 7.62x39mm. Same result, only with a smaller keychain.