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Mithril cannonball

Item

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Mithril cannonball
Released19 November 2025 (Update)
MembersYes
Quest itemNo
Properties
TradeableYes
EquipableNo
StackableYes
NoteableNo
OptionsDrop
ExamineAmmo suited for a boat's cannon.
Values
Value90 coins
High alch54 coins
Low alch36 coins
Weight0 kg
Grand Exchange
Exchange157 coins (info)
Buy limit11,000
Daily volume665,756
View real-time prices
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Advanced data
Item ID31910
LinkMOID

Mithril cannonballs are ammunition used for a boat cannon during boat combat. They can be fired from mithril cannons or stronger.

Four can be made from a single mithril bar with level 55 Smithing, granting 34 experience per bar. Smithing cannonballs require the use of an ammo mould, which requires partial completion of Dwarf Cannon to obtain. Alternatively, a double ammo mould (requiring Foundry Reputation to purchase via the Giants' Foundry minigame) allows players to process two bars into eight cannonballs at the same speed as a regular ammo mould processes one bar into four.

Players with level 87 Sailing can further speed up smithing cannonballs by using the ancient furnace in the Grimstone Dungeon, which halves the time it takes to create cannonballs from 8 ticks to 4 ticks. Combining this with a double ammo mould, players can smith cannonballs at four times the normal speed.

Comparison

Tier Smithing Level Ranged Accuracy Strength
Bronze 5 +12 +43
Iron 20 +16 +56
Steel 35 +20 +74
Mithril 55 +30 +105
Granite 50 +30 +125
Adamant 75 +50 +157
Rune 90 +64 +201
Dragon N/A +80 +270

Creation

Requirements
SkillLevelXP
Smithing Smithing55 (b)34
Quest points Partial completion of Dwarf Cannon
Members
Ticks8 (4.8s)[r 1]
ToolsFacilities Furnace
Materials
ItemQuantityCost
Mithril bar1959
Total cost959
Mithril cannonball4628
Profit−331
Profit after GE Tax−343
  1. ^ Make-X is 8, then 10 ticks

Requirements
SkillLevelXP
Smithing Smithing55 (b)68
Quest points Completion of Sleeping Giants
Minigames Giants' Foundry
Members
Ticks8 (4.8s)[r 1]
ToolsFacilities Furnace
Materials
ItemQuantityCost
Mithril bar21,918
Total cost1,918
Mithril cannonball81,256
Profit−662
Profit after GE Tax−686
  1. ^ Make-X is 8, then 10 ticks

Products

ItemMembersSkillsXPMaterials
Mithril chainshot cannonball × 2
Members
  • Smithing 55
  • Smithing 30
Mithril incendiary cannonball × 2
Members
  • Smithing 55
  • Smithing 20

Item sources

SourceLevelQuantityRarityLeague region
Plundered salvage64 2–550/1,036N/A
Large salvage53 2–550/2,218N/A
Hammerhead shark90 48–604/100N/A
Gryphon95 8–126/128N/A
Cannonball stall87 124/256N/A
Dire gryphon209 8–123 × 6/128N/A
Tarnished chest54 5–101/60N/A
Reinforced chest76 5–102/60N/A

Shop locations

SellerLocationNumber
in stock		Restock
time		Price
sold at		Price
bought at		Change
Per		MembersLeague region
Port Roberts Cannonball StallPort Roberts8,0009s 150 300.0%MembersN/A

Changes

Date Changes
18 March 2026
(Update)

The Ranged Strength bonus of mithril cannonballs has been increased from +48 to +105.

Boat combat
Monsters
Sharks
Sea mammals
Kraken
Rays
Birds
Cannons
Cannonballs
Standard
Chainshot
Incendiary
Repair kit
Unique drops

Source

Content from the Old School RuneScape Wiki (operated by Weird Gloop), licensed under CC BY-NC-SA 3.0.

Source siteOld School RuneScape Wiki
Canonical sourceMithril cannonball
Content licenseCC BY-NC-SA 3.0
License statusdeclared
PictureMithril cannonball · file details

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