OSRS Drop Calculator › Adamant bolts

Best way to farm Adamant bolts

All 5 monsters that drop Adamant bolts, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed.

Drop data: Adamant bolts on the OSRS Wiki

Currently fastest method
Skeletal Wyvern
156 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Skeletal Wyvern
Combat lvl 140 · Slayer 72
3/128 · 75–99
 2.04 47 77 156
Spiritual ranger (Zaros)
Combat lvl 158 · Slayer 63
7/128 · 15
 0.82 24 150 123
Iron dragon (Standard)
Combat lvl 189–215
6/128 · 2–12
 0.328 41 88 29
Zombie (Tarn's Lair) (High level)
Combat lvl 81–100
1/128 · 7
 0.055 25 144 7.9
Tortured gorilla
Combat lvl 141–142
86/1,000 · 1
 0.086 45 80 6.9
How this is calculated: items/hr = (3600 ÷ seconds per kill) × average items per kill. Each monster's drop lines are listed as the wiki shows them (rarity · quantity); the average adds them all up, each as rarity × average quantity × rolls — so a guaranteed drop plus a rarer bonus drop both count. Drop rates and quantities come from the OSRS Wiki's community-verified drop tables. Seconds-per-kill is an editable estimate based on each monster's hitpoints and defence — your real speed depends on your stats and gear, so adjust it and your edits are remembered on this device. Rates marked ~ are approximate on the wiki.

Something wrong on this page?

Drop rates come from the OSRS Wiki and kill times are estimates, so mistakes happen. Tell us what's off and it'll be looked at.