from the front you say?
I dont think the round would make it. once it hits the round loses at least 80-90% of its kinetic energy, and theres a lot of equipment and humanity to go through (even if its only about 1.5 meters from the front) to hit the ammo.
one penetrating shot can hit, dismember the driver, destroy the radio, and at best spray the legs of the commander with shrapnel, which, I'm sure you know, isn't lethal to a round in the turret, and the likelihood of hitting one juuuust right is about the same margins as getting struck by lightning.
and thats taking it realistically, I think the game separates the tank into separate compartments (front, engine, mid/crew, turret) and any hit will stay in the compartment you hit.