They should just develop their own round. The Russian round is basically from the Mosin-Nagant, it is rimmed, so it is obsolete. And you could do better than the standard NATO round with current technology.
Using an assault rifle round in a tank is a bad idea. You would want to have more combat range than the infantry with your armored vehicle.
Using an assault rifle round in a tank is a bad idea. You would want to have more combat range than the infantry with your armored vehicle.