>>64067898
>but are you sure that less modern tanks can't use them due to the autoloader needing upgrades?
Any tank with a 2A46M gun can use it, the older 125 can't withstand the higher chamber pressure to achieve +20 muzzle energy (12MJ vs 10MJ).
It's kinda like the Rh 120 L/55, some rounds for the L/55 can't be fired by some old L/44 due to chamber pressure.