I'm surprised that the discussion re the brewing up of T72s is being related to rounds carried.
This is surely not the case, the spectacular roman candle effect is a result of cordite propellant charges burning rather that any explosive reaction of pretty inert projectiles - which it little resembles?
Any molten spray whanging around inside a tank is surely going to find a cordite bag no matter what, and then it's just fireworks time, surely? Time enough for shells to cook of in the fire minutes later.