In fact I was motivated to do this thanks to your wurm run, but after no luck with the bow/daggers I wanted to try a different map. I saw in the discussion page of the weapon that it drops from two different chests, so I tossed the coin (in my favor, luckily). Days later I saw in Kamadan that there were more people trying to buy the bow, so I decided to make a thread with the run like yours.
Yeah at this point what I do with the worm run. I just enter and search the sulfuric region for 1-2 chests. There is about a 50-60% chance of at least one chest and then the run takes only 1 minute. So it's easily repeatable. Yet, with the vast range of items that can drop, a q9 Ancient bow is quite tricky. After two q10 Ancient recurve bows, I'm still searching for the q9 to finish my ancient bow collection. And now I'm onto skull bows which drop from both your chest run and the worm. But these seem to be quite rare also. Anyways, best of luck!
