To me, dark roasts are all about the bloom. I also think 5 pours might be too many, but YMMV. I wouldn’t grind any smaller lest you enjoy lots of fines.

I bloom 20g of dark roast with 35-40ml of boiling water for 90 seconds and then I do 3 100ml pours every 30 seconds. This is my everyday V60 coffee.

Bonus points for using the mouse to copy/paste

C:/MindTheGapps-16.0.0-arm64-20250812_214353.zip

Finally upgraded to Lineage OS 23