d647950c_d___Game_Guide_and_Walkthrough__BONE_CHARM_PROPERTY
[BONE CHARM NAME] Sturdy Bolts [USEFULNESS] It is a good idea to wear this charm if you like using crossbow frequently. [BONE CHARM PROPERTY] 
Decreases the risk of breaking a bolt.
Bone Charms - list - Collectibles - Dishonored - Game Guide and Walkthrough
BONE CHARM PROPERTY