[LeoWindhorse]

https://www.wideopenspaces.com/air-force-rods-from-god-payload-to-hit-with-the-force-of-a-nuclear-weapon/

[Pearls Before Swine]

Your link talks about theoretical possibility, but not existence.

Over the years I’ve heard these mentioned, but never knew whether the theory had been put into practice.

There’s no doubt there would be a big bang from a gravity accelerated weapon. Accuracy? I have no idea. In orbit now? I have no idea.