I remember reading a account from a Soviet Tanker who preferred Shermans (from lend lease) because the main barrel ammunition they were supplied with didn't explode when it caught fire. But like next line was, hey they tell us the chemical engineers are reversing engineering that for the next batch for the T34s. Like even when there were flaws they were fixing them and improving.
I actually did some research on this a while ago, apparently soviet ammo used a more powerful explosive and that was why they detonated so frequently. So there was a trade off.