Crossbow and bolt compatibility
Crossbows used have a minimum ranged level that a player needed in order to wield them. Bolts can be wielded by any player, but could not be fired if the equipped crossbow's minimum ranged level was below the equipped bolts' own minimum level. The more powerful a bolt was, the higher the minimum level requirement was.
Basic metal bolts had a minimum level that matched the corresponding basic crossbow. Adding a lower-level gem tip increased this minimum level by 10. Adding a higher-level gem tip increased this minimum level by 20 instead. Enchanting any gem-tipped bolt increased the minimum level by a further 10.