Magnum Force is a mod that increases damage of secondary weapons at the cost of increased spread (reducing accuracy) by +15% and +0.5 per rank, at a maximum of +165% and +5.5 at rank 10, respectively. Some weapons will have additional spread added, in addition to the base amount.


Rank Damage Spread Cost
0 +15% +0.5 4
1 +30% +1.0 5
2 +45% +1.5 6
3 +60% +2.0 7
4 +75% +2.5 8
5 +90% +3.0 9
6 +105% +3.5 10
7 +120% +4.0 11
8 +135% +4.5 12
9 +150% +5.0 13
10 +165% +5.5 14
Additional Spread Modifiers
Weapon Rank 0 Spread Rank 10 Spread
Acrid.png Acrid +5.15 +56.65
Hikou.png Hikou +0.58 +6.38
Kunai.png Kunai +0.59 +6.49
Despair.png Despair +0.58 +6.38
Kunai.png MK1-Kunai +0.58 +6.38
Spectra.png Spectra (SpectraVandal.png Vandal) +0.4 +4.4
Cycron.png Cycron (TenetCycron.png Tenet) +0.55 +6.05
Ocucor.png Ocucor +1.5 +16.5
Staticor.png Staticor +0.15 +1.65
Nukor.png Nukor +0.5 +5.5
Embolist.png Embolist +0.5 +5.5
Stug.png Stug +0.5 +5.5
Pox.png Pox +0.5 +5.5
Castanas.png Castanas +0.5 +5.5
Gammacor.png Gammacor +0.15 +1.65
SynoidGammacor.png Synoid Gammacor +0.15 +1.65
SanctiCastanas.png Sancti Castanas +0.5 +5.5
Spira.png Spira +0.5 +5.5
SpiraPrime.png Spira Prime +0.5 +5.5
HikouPrime.png Hikou Prime +0.5 +5.5
Talons.png Talons +0.5 +5.5
Atomos.png Atomos +0.2 +2.2


  • 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).
  • This will increase the spread of pistol shotguns.
  • Damage increase value of this mod stacks additively with that of Mod TT 20px.png Hornet Strike and Mod TT 20px.png Augur Pact to a total of +475% base damage.
  • Accuracy reduction varies by weapon, even for those with 100 accuracy. For example, Acrid.png Acrid (which has 100 accuracy, decreased to 1.6 at max rank) needles fly very far outside of the reticle, while Akstiletto.png Akstiletto (which has 23.5 accuracy, decreased to 10.3 at max rank) spreads bullets considerably but do not stray too far from the reticle.
  • The final accuracy after installing Magnum Force can be found by the following formula:


  • Mod TT 20px.png Targeting Subsystem can help negate the accuracy penalty from this mod once its effects activate when combined with a fully-ranked Magnum Force. Keep in mind however that the accuracy bonus from Targeting Subsystem will only take effect once you hit an enemy and will only apply when you are aiming.
  • If a pistol already has a max rank Mod TT 20px.png Hornet Strike, adding a max rank Magnum Force represents only a ~54.6392% increase in damage per shot, compared to a 90% increase for a max rank uncommon elemental mod such as Mod TT 20px.png Heated Charge.
  • However, the Angstrum.png Angstrum can benefit from this, as it allows its charged shots to cover a larger area at the cost of limiting long-range capabilities. Alongside it are other secondaries such as Zakti.png Zakti, Talons.png Talons, Castanas.png Castanas, Staticor.png Staticor, Stug.png Stug, Sonicor.png Sonicor, Pox.png Pox, and Kulstar.png Kulstar when equipped with Multishot mods.
  • This mod also fixes the inaccuracy bug that occurs when using multishot on the Castanas.png Castanas and SanctiCastanas.png Sancti Castanas at low level, but it's still advised to max the mod anyway for extra damage and higher spread on the Castanas, leading to more crowd control.
  • This should only be used on weapons that already have Mod TT 20px.png Hornet Strike installed, as the bonuses gained from this mod are greater than Magnum Force and comes with no accuracy penalty. Also take Mod TT 20px.png Augur Pact into consideration as it costs less mod capacity without the accuracy penalty.


  • When it was first released, Magnum Force increased recoil as well as damage. However the recoil penalty did not affect recoil-less weapons (Acrid.png Acrid, and Embolist.png Embolist, among others). This was confirmed to be unintentional in Warframe Prime Time - Episode 2 (9:40). The mod's effects were changed in Update 10.4 (2013-10-16) to give weapons an accuracy penalty instead of a recoil penalty.
  • "Magnum Force" is the name of the second movie in the "Dirty Harry" series of films starring Clint Eastwood.
  • Prior to Hotfix 24.2.10 (2019-01-23), Magnum Force provided +66% damage and -33% accuracy at max rank.


See Also[]

Patch History[]

Hotfix 24.2.10 (2019-01-23)

  • Increased Damage from +66% to +165% (at max rank).
  • Increased Accuracy reduction from -33% to -55% (at max rank).

Update 10.5 (2013-10-23)

  • Corrupted “Magnum Force” mod now works with Acrid.
  • Corrupted Mod “Magnum Force” changed from Damage/Recoil to Damage/Accuracy trade-off.

Update 10.3 (2013-10-09)

  • Introduced along with Orokin Vaults.