Although he was at a loss with the unexpected ambush, Kayneth, hidden within the protective membrane, couldn’t help but laugh when he discovered that the attack was a shooting as unthreatening as the last time. But he didn’t know that the opponent he was mocking had also figured out the weakness of his automated defense.

Before the Calico stopped firing, Kiritsugu’s free right hand had already pulled out the Contender and fired a shot at the center of the expanded, semi-circular mercury membrane.

Volumen Hydrargyrum had already adapted to the best physical shape to protect against the Calico. However, the initial velocity of the .30-06 Springfield is 2.5 times higher than the 9mm bullets, and its destructive power seven times the latter.

Kiritsugu had completely seen through the speed of Volumen Hydrargyrum, which came from pressure. Although a blob of mercury can quickly spread out into a membrane faster than a bullet through hydraulic pressure, it is impossible to quickly go back to a blob from a membrane using pressure alone. That is the limit of hydrodynamics.

Therefore, when another sudden massive force is launched against it, the mercury can’t react quickly and form a powerful defense –

A big hole was punched right through the mirror-smooth surface of the mercury membrane. Judging from Kayneth’s wails inside, the Springfield bullet has hit the target.

- Fate/Zero: Act 6, Part 4