I have a friend that owns a Yak-52.
Russia Testing Shotgun-Armed Yak-52 Trainer Aircraft To Down Ukrainian Drones
WWI-style air combat tactics applied to the drone problem have been proven by Ukraine and are now being adopted in Russia, but using shotguns is questionable.
https://www.twz.com/air/russia-testing-shotgun-armed-yak-52-trainer-aircraft-to-down-ukrainian-drones
I have a friend that owns a Yak-52.