In Breath of the Wild, you can fire bows without having any arrows. Does it decrease the weapons’ durability at all?
Excellent question. I was really curious about this so I did some googling and found nothing. But I still wanted to know so I tested it myself. I grabbed my self 2 boko bows and tested how many shots it would take to break, and if the same amount of "dry-fires" would break it.
The boko bow shot 16 arrows before it fully broke. With the second bow I fired 16 blanks and it didnt break. So I fired another 16 blanks and it still didnt break. Finally, I fired 16 arrows and it broke on the last one.
So to conclude, dry-firing a bow does not cause it to lose durability. (And it takes 16 shots to break a boko bow).