I think IRL they can all do 6.7, cause I have seen videos of allegedly Russian auto loader do around 6.7, while 7.1 seem like taking extra time to select round. Absolutely nothing to stop Russian ones to do that.
I’m aware and a reload buff to 6.7s would be welcome, but like I said, what improvements have the Chinese made to the AZ autoloader? They’d be using the AZ-184 model at least.
also the T-80s should be 6 seconds.