OSRS Drop Calculator › Steel cannonball

Best way to farm Steel cannonball

All 28 monsters that drop Steel cannonball, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed. 1 other source isn’t ranked; see why below.

Drop data: Steel cannonball on the OSRS Wiki

Currently fastest method
Doom of Mokhaiotl
948 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Doom of Mokhaiotl
Combat lvl 558–908
5/104 · 200–600
 19.23 73 49 948
Vet'ion
Combat lvl 454
4/126 · 550
 17.46 75 48 838
Zombie pirate (Diary)
Combat lvl 22–34
12/378 · 20–100
 1.9 9 400 762
Phantom Muspah
Combat lvl 741
5/235 · 670 (2 rolls)
 28.51 172 21 597
Calvar'ion
Combat lvl 264
4/128 · 180
 5.62 43 84 471
Corporeal Beast
Combat lvl 785
17/512 · 2,000
 66.41 573 6 417
Bull shark
Combat lvl 65
4/100 · 48–60
 2.16 19 189 409
Mad Angel
Combat lvl 270–588
16/150 · 90–100
 10.13 99 36 368
Callisto
Combat lvl 470
4/126 · 600
 19.05 231 16 297
Venenatis
Combat lvl 464
4/126 · 600
 19.05 245 15 280
The Hueycoatl
Combat lvl 642
3/68 · 60–1,200
 27.79 366 10 273
Artio
Combat lvl 320
4/128 · 190
 5.94 79 46 271
Abyssal Sire
Combat lvl 350 · Slayer 85
4/139 · 300
 8.63 117 31 266
Strange creature (Shadows of Custodia)
Combat lvl 93 · Slayer 54
20/160 · 10–15
 1.56 22 164 256
Elder custodian stalker
Combat lvl 142 · Slayer 76
15/124 · 20–30
 3.02 46 78 237
Mature custodian stalker
Combat lvl 117 · Slayer 67
15/107 · 15–20
 2.45 38 95 232
Zombie pirate (Regular)
Combat lvl 22–34
12/1,260 · 20–100
 0.571 9 400 229
Crazy archaeologist
Combat lvl 204
4/128 · 150
 4.69 78 46 216
Tiger shark
Combat lvl 125
4/100 · 48–60
 2.16 36 100 216
Juvenile custodian stalker
Combat lvl 93 · Slayer 54
20/160 · 10–15
 1.56 29 124 194
Spindel
Combat lvl 302
4/128 · 200
 6.25 132 27 170
Deranged archaeologist
Combat lvl 276
4/131 · 80
 2.44 68 53 129
Phosani's Nightmare
Combat lvl 1024
4/100 · 137–382
 10.38 514 7 73
Cerberus
Combat lvl 318 · Slayer 91
4/130 · 50
 1.54 88 41 63
Skeleton (Tarn's Lair) (Low level)
Combat lvl 42–59
3/128 · 6
 0.141 12 300 42

Other sources (not ranked)

Ancient Custodian is a superior slayer monster: it only appears randomly (~1 in 200 kills) while you’re on a slayer task. So it’s not included in the ranking above.

Monster Drops (rarity · quantity) Avg/kill
Ancient Custodian
Combat lvl 239 · Slayer 76
15/124 · 20–30 (3 rolls)
 9.07
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.