A Magic shortbow (u) is an unstrung Magic shortbow. It is made by using a knife on Magic logs. Level 80 Fletching is required to do this and grants 83.3 experience. Stringing this item with a bow string also requires 80 Fletching, and gives 83.2 experience. Once players reach 85 Fletching, most prefer to make Magic shieldbows instead of Magic shortbows from Magic logs as they yield more experience and have a greater High alchemy value.
It takes 15 seconds to string an inventory of 14 shortbows. With banking time, this means players can potentially string 3 inventories a minute, which is 180 inventories an hour, for 2,520 bows in total. This means that the experience gained per hour is roughly 209,664 Fletching experience.