Heavy Caliber

Heavy Caliber
Tradeable
Cannot be obtained from transmutation
📝 Update Infobox Data
Max Rank Description
+165% Damage -55% Accuracy
General Information
Type	Rifle
Polarity	Madurai
Rarity	Rare
Max Rank	10
Endo Required To Max	30,690
Credits Required To Max	1,482,327
Base Capacity Cost	6
Trading Tax	8,000
Introduced	Update 10.3 (2013-10-09)
Vendor Sources
Official Drop Tables
https://www.warframe.com/droptables

Heavy Caliber is a mod that increases damage of Primary Weapons (excluding Shotguns) at the cost of increased spread (reducing accuracy). Some weapons will have additional spread added, in addition to the base amount.

Stats

Rank	Damage	Spread	Cost
0	+15%	+0.27	6
1	+30%	+0.54	7
2	+45%	+0.81	8
3	+60%	+1.08	9
4	+75%	+1.35	10
5	+90%	+1.62	11
6	+105%	+1.89	12
7	+120%	+2.16	13
8	+135%	+2.43	14
9	+150%	+2.70	15
10	+165%	+2.97	16

Additional Spread Modifiers

Weapon	Rank 0 Additional Spread	Rank 10 Additional Spread
Dera ( Vandal)	+0.9	+9.9
Ferrox ( Tenet)	+1	+11
Flux Rifle ( Tenet)	+0.27	+2.97
Javlok	+1.5	+16.5
Miter	+1.36	+14.96
Ogris ( Kuva)	+5	+55
Scourge ( Prime)	+1.75	+19.25
Synapse	+0.36	+3.96
Torid	+3	+33

Drop Locations

Mission Drop Tables

Mission Type	Source	Rotations or Drop Table	Chance	Quantity	Avg. per roll	Star Chart Nodes
Orokin Vault	Orokin Derelict Vault	A	4.17%	1	0.0417	Any mission node on Deimos except Cambion Drift, Magnacidium, Exequias, and Hyf

Enemy Drop Tables

Enemy	Drop Table Chance	Item Chance	Chance	Expected Kills	Quantity	Avg. per roll attempt

Sourced from the official drop table repository. See Module:DropTables/data to edit on the wiki.

Notes

• Instead of reducing the accuracy by 5% per rank, each rank increases spread by a specific value per rank depending on the weapon.
• Damage bonus stacks additively with similar mods, such as  Serration.
  • Since the two stack additively and Heavy Caliber costs 2 more mod capacity for the same bonus, combining the two is slightly less efficient in terms of damage per capacity cost. Maxed Serration grants +11.79% bonus damage per 1 mod capacity, while maxed Heavy Caliber grants +10.31% bonus damage per mod capacity. Combining the two, Serration and Heavy Caliber grant +11% bonus damage per 1 mod capacity, which is +0.79% less bonus damage per capacity than Serration alone.
• Added spread is not affected by bonuses that increase accuracy, such as  Twitch or  Guided Ordnance.
  • For example, a  Braton with  Heavy Caliber and  Twitch will have a max deviation of 5.0 × (1 -  40%) +  2.97 = 6 degrees.
• Causes beam of all continuous weapons to noticeably wobble.

Trivia

• When it was first released, Heavy Caliber's original penalty was an increase in recoil as well as damage. However the recoil penalty did not affect recoil-less weapons ( Flux Rifle,  Ignis,  Synapse, bows and  Lanka among others), effectively acting as another instance of  Serration. This was confirmed to be unintentional in Warframe Prime Time - Episode 2 (9:40). The mod's penalty was changed in Update 10.4 (2013-10-16).

Gallery

Mod's effects prior to Update 10.4

Mod's appearance prior to Update 14

See Also

•  Magnum Force, the secondary equivalent.
•  Vicious Spread, the shotgun equivalent.

Media

Warframe Heavy Caliber After Update 10.4-0

Warframe Heavy Caliber mod

Patch History

Update 32.2 (2022-11-30)

• Fixed Heavy Caliber having no effect on Ivara’s Artemis Bow.
  • It will now behave like Cernos Prime when Heavy Caliber is equipped.

Update 20.0 (2017-03-24)

• Fixed the Ferrox not being affected by Heavy Caliber.

Hotfix 19.4.1 (2016-12-16)

• Fixed extra stat appended to end of Heavy Caliber description.

Update 14.5 (2014-08-28)

• Fixed Mirage’s Hall of Mirrors not being affected by some mods (Heavy Caliber).

Hotfix 14.1.4 (2014-08-06)

• Fixed an issue with certain Mods (i.e Heavy Caliber) not working correctly with Hall of Mirror clones.

Update 12.3 (2014-02-27)

• Weapon and Mod conclave tweaks – increased the rating on the Heavy Caliber mod.

Update 10.4 (2013-10-16)

• Recoil penalty changed to accuracy penalty.

Update 10.3 (2013-10-09)

• Introduced along with Orokin Vaults.