Dummy warheads, entirely kinetic.
Not ‘dummy’ warheads. They are specifically designed of shape and material to ensure penetration of the surface. Similar to armor-piercing rounds. WHen fired at a tank, they don’t explode on impact. They penetrate the armor and the energy from the speed is transferred to whatever is inside the tank as the round is slowed,stopped by friction. The round doesn’t shoot out the other side because the ‘projectile’ gets deformed piercing the armor.
It’s why a bullet won’t go through a telephone book but an arrow will.