Only now.
The ancient cauldron had the dual overlapping defense of the God-Locking Chain and the God-Slaying Cauldron. Even if he used the God-Slaying Bone-Breaking Bow and the God-Slaying Bone-Breaking Arrow to hit it, it would at most severely injure the ancient cauldron; it could not truly kill the ancient cauldron with an arrow.
As for killing other half-step detachment universe experts with arrows, would it be useful?
Chapter 1477