Buy RS3 Sapphire bolts
Sapphire bolts are mithril crossbow bolts tipped with sapphire bolt tips. They need level 40 Ranged to use. These are tier 40 bolts with 384.0 ability damage and a maximum hit of 576. They are stackable, tradeable, and weigh nothing, so you can carry a large amount with ease.
Players can make sapphire bolts with the Fletching skill. At level 56 Fletching, use a chisel on a cut sapphire to make 12 sapphire bolt tips. Attach the tips to mithril bolts to finish them. Each bolt gives 4 Fletching experience.
These bolts get better with magic. At level 7 Magic, the Enchant Crossbow Bolt (Sapphire) spell enchants 10 bolts at a time. This turns them into enchanted sapphire bolts, which gain a special ability.
Sapphire bolts work well for training Ranged or stocking up on ammo. They also drop from Waterfiends, but buying a stack saves time spent grinding. If you like crafting, they can be disassembled for parts like base parts, head parts, spiked parts, and stunning components. Grab a stack of RS3 sapphire bolts and keep your crossbow loaded.