Cannonball

Cannonballs are ammunition fired from cannons on a boat during boat combat. On land, the dwarf multicannon can fire the original steel and granite cannonballs only.

Most cannonballs are created at a furnace, using an ammo mould to make 4 at a time or a double ammo mould to make 8. With level 87 Sailing, players can use the forge in Grimstone Dungeon to halve the time it takes to cast a set of cannonballs.

During boat combat, cannonball firing costs can be greatly reduced with the use of a ballistic attractor, which automatically recovers 60% of cannonballs fired (equivalent to roughly 2.5 shots fired per cannonball consumed).

Dwarf multicannons are often used to attack monsters in multicombat areas and complete Slayer tasks more quickly. They can fire two types of cannonballs:

Item		Level	Max Hit	GE price	Notes
	Steel cannonball	35	30	283	Requires completion of Dwarf Cannon
	Granite cannonball	50	35	N/A	Requires either 75 Slayer or 62 Sailing to obtain granite dust from either Grotesque Guardians or the Mad Angel

Additional metal cannonballs for ship-based combat were released alongside the Sailing skill. Firing a cannon awards both Sailing and Ranged experience, though when crewmates fire cannons only Sailing XP is granted. Smithing any type of cannonball requires completion of Dwarf Cannon.

Regular cannonballs are the primary means of dealing damage to monsters at sea.

Bronze cannonballs can be bought from charter ship shops. Once players have hit 50 Sailing, they may dock at Port Roberts, where they can find a cannonball store run by Iron Bill, who sells bronze, iron, and mithril.

Cannonballs may also be smithed (except for dragon), acquired as monster drops, or stolen from the cannonball stall in Port Roberts.

When actively manned by a player, cannonballs receive an additional Heavy Ranged Strength bonus, applied on top of the standard ranged strength of the cannonball.^[1]

Item		Level	Accuracy	Strength	Heavy Ranged Bonus	GE price
	Bronze cannonball	5	12	43	15	7
	Iron cannonball	20	16	56	30	14
	Steel cannonball	35	20	74	40	283
	Mithril cannonball	55	30	105	50	139
	Granite cannonball	50	30	125	65	N/A
	Adamant cannonball	75	50	157	80	226
	Rune cannonball	90	64	201	90	691
	Dragon cannonball	N/A[a]	80	270	100	1,285

Chainshot and incendiary cannonballs, which are made from regular cannonballs, can be made of any smithable cannonballs. Smithing level requirements for upgrading cannonballs are the same as for smithing regular cannonballs of same tier.

Chainshot cannonballs deal damage and halve the target's movement speed. They are made 2 at a time from 2 cannonballs and 1 chain.

Item		GE price
	Bronze chainshot cannonball	21
	Iron chainshot cannonball	42
	Steel chainshot cannonball	322
	Mithril chainshot cannonball	587
	Adamant chainshot cannonball	1,396
	Rune chainshot cannonball	4,021

Incendiary cannonballs always^{[confirmation needed]} inflict burn damage based on the following formula:

Burn damage=⌊Damage roll5⌋

Here, the burn damage that is applied to the monster is calculated based on the damage roll, meaning it is calculated before applying the target's flat armour modifiers. This also has the effect that monsters with positive flat armour can be hit a 0 from an incendiary cannonball, but still be burnt by the attack, but only if that attack would have dealt 5 base damage before applying flat armour. After burn is applied, a total of 6 instances of burn damage are dealt to the burnt monster over the course of 30 ticks (18s).

Unlike other types of burn damage, incendiary cannonballs do not use burn stacks to apply their damage. Instead, whenever incendiary burn is applied to a monster, the burn counter for that monster is reset to 6, and if the newly applied burn would be greater than the monster's current burn damage, the old burn damage is overwritten by the new, higher burn damage. This means the burn damage applies as follows:

Base damage<5→Burn damage / counter unaffectedBase damage≥5→{Apply max⁡(current burn,⌊Base damage5⌋) burn damageReset burn counter to 6

This has the effect that high burn damage can be sustained by subsequent lower damage dealt using incendiary cannonballs. Because of this, it can be useful to deal the first instance(s) of damage as a player manning the cannon, after which crewmates can reset the burn counter using lower damage attacks. Because the burn damage is calculated based on the base damage instead of the actual damage, these cannonballs can be used effectively against monsters with high flat armour like veiled krakens, to circumvent their usual damage reduction.

Incendiary cannonballs are made 2 at a time from 2 cannonballs and 10 rubium splinters.

Item		GE price
	Bronze incendiary cannonball	21
	Iron incendiary cannonball	45
	Steel incendiary cannonball	353
	Mithril incendiary cannonball	641
	Adamant incendiary cannonball	1,028
	Rune incendiary cannonball	1,598

Due to an update, the information in this article may be out-of-date. Reason: The crewmate formula doesn't account for the player's Sailing level anymore. The exact formula is currently unknown. You can help improve it by updating the information.

module=Cannon_max_hit_calculator
form=CannonForm
result=CannonResult
param = name|Player name||hs|ranged_lvl,5,1;sailing_lvl,24,1
param = crew_toggle|Fired by|Player|buttonselect|Player,Crewmate|Player=ranged_lvl,ranged_str,void,prayer;Crewmate=crew_select,sailing_lvl
param = sailing_lvl|Visible Sailing level|1|int|0-104
param = ranged_lvl|Visible Ranged level|1|int|0-112
param = ranged_str|Visible Ranged strength|0|int|0-65
param = crew_select|Crewmate|Jobless Jim|select|Jobless Jim,Jolly Jim,Sailor Jakob,Ex-Captain Siad,Adventurer Ada,Cabin Boy Jenkins,Spotter Virginia,Bosun Zarah,Oarswoman Olga,Jittery Jim
param = cannon_type|Cannon|Bronze|select|Bronze,Iron,Steel,Mithril,Adamant,Rune,Dragon|Bronze=cball_bronze;Iron=cball_iron;Steel=cball_steel;Mithril=cball_mithril;Adamant=cball_adamant;Rune=cball_rune;Dragon=cball_dragon
param = cball_bronze|Cannonball|Bronze|select|Bronze
param = cball_iron|Cannonball|Bronze|select|Bronze,Iron
param = cball_steel|Cannonball|Bronze|select|Bronze,Iron,Steel
param = cball_mithril|Cannonball|Bronze|select|Bronze,Iron,Steel,Mithril
param = cball_adamant|Cannonball|Bronze|select|Bronze,Iron,Steel,Mithril,Granite,Adamant
param = cball_rune|Cannonball|Bronze|select|Bronze,Iron,Steel,Mithril,Granite,Adamant,Rune
param = cball_dragon|Cannonball|Bronze|select|Bronze,Iron,Steel,Mithril,Granite,Adamant,Rune,Dragon
param = prayer|Prayer|None|select|None,Sharp Eye,Hawk Eye,Eagle Eye,Dead Eye,Rigour
param = void|Using Void Knight Ranged set?|None|select|None,Regular Void,Elite Void 
param = perildance|Using perildance bitter?|false|check|true,false
autosubmit = disabled

• Cannons benefit from the player’s ranged accuracy and ranged strength bonuses. Bonuses from the weapon, shield, and ammunition slots are excluded from this calculation.
  • Take precaution with items where the applied strength bonus is conditional, eg. a charged Dizana's Quiver.

An ammo mould can be used to smith cannonballs with metal bars at a furnace to make 4 cannonballs per bar, or alternatively a Double ammo mould can be used to make 8 cannonballs with two bars. Additionally, if the player has 87 Sailing, the Ancient furnace can be used on Grimstone island (fairy ring code: DLP) to forge cannonballs at twice the rate of 5 ticks per action instead of 10. This can be further improved by recruiting Isles who allows the player to un-note select metal bars right next to the Ancient furnace.

The following smithing rates are rough estimates and will vary depending on how attentive vs AFK the player is. For the non-ancient furnace it's assumed the player is using the Edgeville furnace.

For Ironman Mode players looking to acquire cannon balls for sailing, it's generally recommended to buy either Bronze, Iron, or Mithril cannonballs from Port Roberts Cannonball Stall, since adamantite, rune and dragon cannonballs are much harder to come by.

• Cannon ball from Between a Rock... which is fired from a cannon in an attempt to breach Dondakan's mine.
• Cannon ball from Cabin Fever which is fired from a cannon on The Adventurous to sink an enemy ship.

• Cannonballs (Dondakan's Rock)