Thanks for clarifying :) OK there is another bow above that I guess you've not got the right combo of mats to unlock it yet! But that said a Huntsman at level 4 should get the job done in the 200 arrows mentioned. Assuming good clean hits?
Hmm the bosses do heal up a touch if you retreat but not noticed it being so much as to radically stall a fight.
Planning to beat him up in my current run soon might give it a go with a huntsman just to test in case anythings shifted mechanic wise since my last attempt?