The book ‘Armored Champion: The Top Tanks of World War II’ has in chapter 1 a table showing the results of a Soviet study regarding the performance of the T-34 tank’s armor versus enemy rounds. The table shows the probability of penetration if hit and it is very interesting to note that till early 1943 the percentages are roughly 50-50. However from summer ’43 till March ’45 the percentage goes up to 88-97%, thus any round that hits the tank is almost certainly going to penetrate.
This is very interesting information, as it proves the vulnerability of
the T-34 to the new German 75mm guns introduced in 1942-43, so I’ve included it
Myths - T-34 Best Tank of the war and The
German response against the Soviet T-34 and KV tanks.