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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
Rank Ogris Ogris Miter Miter FluxRifle Flux Rifle Dera Dera Synapse Synapse Torid Torid Javlok Javlok Ferrox Ferrox Scourge Scourge
0 +5 +1.36 +0.27 +0.9 +0.36 +3 +1.5 +1 +1.75
1 +10 +2.72 +0.54 +1.8 +0.72 +6 +3.0 +2 +3.50
2 +15 +4.08 +0.81 +2.7 +1.08 +9 +4.5 +3 +5.25
3 +20 +5.44 +1.08 +3.6 +1.44 +12 +6.0 +4 +7.00
4 +25 +6.80 +1.35 +4.5 +1.80 +15 +7.5 +5 +8.75
5 +30 +8.16 +1.62 +5.4 +2.16 +18 +9.0 +6 +10.50
6 +35 +9.52 +1.89 +6.3 +2.52 +21 +10.5 +7 +12.25
7 +40 +10.88 +2.16 +7.2 +2.88 +24 +12.0 +8 +14.00
8 +45 +12.24 +2.43 +8.1 +3.24 +27 +13.5 +9 +15.75
9 +50 +13.60 +2.70 +9.0 +3.60 +30 +15.0 +10 +17.50
10 +55 +14.96 +2.97 +9.9 +3.96 +33 +16.5 +11 +19.25

Drop Locations[]

Mission Drop Tables

Mission Type Source Rotations
or
Drop Table
Chance[1] Quantity[2] Avg. per roll[3] 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[4] Item Chance[5] Chance[6] Expected Kills[7] Quantity[8] Avg. per roll attempt[9]

Sourced from official drop table repository.

Notes[]

  • Instead of reducing the accuracy by 5% per rank, each rank increases spread by a specific value per rank depending on the weapon. This effectively reduces accuracy but may reduce it by greater than 5% per rank (according to the Arsenal UI).
  • Damage increase value of this mod stacks additively with that of Mod TT 20px Serration to a total of +330% base damage.
    • 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.
    • The bonus damage from using Heavy Caliber with Serration is double that of using Serration by itself, though it comes at the cost of an additional mod slot and Heavy Caliber's slightly higher "base" drain of 6.
      • For example, if base damage is 100 then Serration adds 165% bonus damage and Heavy Caliber adds an additional 165% bonus damage, for a total of 430 damage. Thus, bonus damage is doubled for roughly double (+114%) the drain cost.
  • Accuracy reduction varies by weapon, even for those with 100 accuracy. For example, Ogris Ogris (which has 100 accuracy, decreased to 1.7 at max rank) rockets fly very far outside of the reticle, while Soma Soma (which has 28.6 accuracy, decreased to 15.5 at max rank) spreads bullets considerably but do not stray too far from the reticle.
  • The final accuracy after installing Heavy Caliber can be found by the following formula:
  • While the center beam of all continuous weapons will noticeably wobble, they will stay within the reticle, making them more accurate than most other weapons.

Bug[]

  • The accuracy stat in the mod's description uses the negative value of Ogris Ogris' spread value as a percentage.

Trivia[]

Gallery[]

See Also[]

Media[]

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.
  1. Chance to roll item within drop table
  2. Amount rewarded on successful roll
  3. (Quantity × Chance)
  4. Chance to roll drop table
  5. Chance to roll item within drop table
  6. (Drop Table Chance × Item Chance)
  7. (1 / Chance), see WARFRAME Wiki:Expected & Nearly Guaranteed Numbers for more details
  8. Amount rewarded on successful roll
  9. (Quantity × Chance), average item quantity on a roll attempt (successful or not)
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