Yak-9T - incredible firepower (or maybe incredible tank's lack of armor?)

[majorfailure]

Originally Posted by swiss

Uhhh - no.
What makes you think that is the case?

A SMALL round penetrating will not have a large spalling effect -especially if we talk about rounds, that lost most of their energy for penetrating, which will be the case for most aircraft fired rounds. And a SMALL round, that lost lots of energy is not going to bounce around inside the tank a lot.

Originally Posted by swiss

Again: You can disable an AFV without penetrating it by damaging the engine(protected only by light armor) or the tracks.

Yes, but you need LARGE rounds for that (~75mm+ -and then even HE rounds can destroy tanks), a .50cal is not going to cause spalling. And tracks, I doubt that even large rounds could damage most tank tracks - if not by fluke hits at the connecting bolt heads.