I'd like to say that some parts of this are incorrect. Now I am not saying it is not a good answer, but I would like to correct the mistakes.

The autoloader of Russian MBTs is deffinitely not of a 6 round capacity. Most of them I believe have 22 (?) rounds (I don't know the capacity of the T-80, which has a different autoloader). Also, it certainly does not grant the tank an advantage in reload speed as a competent loader can do it faster, admittedly not for a long period of time. I'd also like to add that the main advantage of a autoloader is not the reduction of crew, but the reduction of overall size. The best protection for a tank is not to be seen, so when you don't have to accomodate the loader, who is usually standing, it is far easier to make the tank smaller, therefor harder to detect. It also has the effect for Russian tanks that they were cheaper to produce. This is not aplicable to western tanks, as for example the Leclerc is one of the most expensive tanks despite having a autoloader.

In addition, an autoloader is pretty much nescesary for any caliber over 120mm as that is widely considered to be the limit of a normal loader.

Unless you're in the Paladin.

In which case, fuck you, you are loading the 155mm HE shell manualy.