Enchanting onyx bolts
|Staff of fire|
Large amount of starting money
|Inputs (103,273,650)||Outputs (104,638,500)|
13,500 × Onyx bolts (102,492,000)
1,350 × Death rune (357,750)
1,350 × Cosmic rune (423,900)
13,500 × Onyx bolts (e) (104,638,500)
Onyx bolts (e) have a relatively high High Alchemy price, so many players use them to train Magic due to their high Grand Exchange limit. They can also be put in the Alchemiser mk. II while still profiting off them at the same time.
Enchant Crossbow Bolt (Onyx) is cast with one cosmic rune, 20 fire runes, one death rune and enchants 10 bolts at a time. Use a staff of fire for free fire runes. Click the Enchant Crossbow Bolt magic spell, which opens a menu to enchant bolts. You can right-click the Onyx bolts in this menu to enchant up to 10 sets of 10 bolts at once. Each set of ten spells takes approximately 26 seconds, so you can make up to 13,500 enchanted Onyx bolts per hour. Because the runes and bolts all stack, there is no need to bank, and you can enchant in almost any location.
Up to 60,000 bolts can be enchanted per hour (1,000 per minute) by holding spacebar and spam clicking the Enchant Crossbow Bolt spell repeatedly. This is very high intensity and not recommended for long periods of time. This increases experience per hour to 582,000, while increasing profit made to 6,066,000 per hour.
The bolt market is fairly volatile, so test the profit of one set of bolts before you buy the runes and bolts in bulk. Maximise your profit by buying one Onyx bolt (e) instantly, and sell all of yours for slightly less than what you paid. They may take a while to sell, but an extra 100 coins per bolt can double your profit.
While the bolts can potentially sell slightly faster by undercutting the price at which they instantly buy, it is advised to sell them for the exact same price, to avoid starting a downward spiral by undercutting other sellers and very likely getting undercut in return.