One can definitely shave off of an 8k, especially from some of the newer 8k’s that perform much like 12k’s if the bevel is properly set up.

It is also aggressive as witnessed by the swarf in the slurry, this also could be scratching the bevel, though the edge looks nice and straight.

This is said to be one of those stones capable of a higher finish. Any 8k, stropped on Chromium Oxide will provide a good smooth shaving edge. Not a Jnat edge, but a solid shaving edge. Chrome Oxide will bump the edge up to 20-30K.

For many years here on this fora the Norton 8k was the gold standard.