Big Guns

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Big Guns
Icon Fo3 Big Guns skill
Fallout 3
modifiesAccuracy with Big Guns
governed byAgility
initial value10% + (1% x Agility)
related traitsFast Shot
Fallout 2, Fallout Tactics
modifiesAccuracy with Big Guns
governed byAgility
initial value2% x Agility
related traitsFast Shot
Fallout 3
modifiesDamage and accuracy with Big Guns
governed byEndurance
initial value2 + (2 x Endurance) + ceil(Luck / 2)
related perksSize Matters

The operation and maintenance of really big guns - miniguns, rocket launchers, flamethrowers and such.

— In-game description

Big Guns is a Fallout, Fallout 2, Fallout 3, Fallout: Brotherhood of Steel, and Fallout Tactics skill. It determines combat effectiveness with any weapon categorized as a "Big Gun", such as flamers, miniguns, missile launchers, Fat Man, etc.


\text{Initial level}\%=10+\text{Agility}

Example: A starting Agility of 5.


The Strength requirements of most big guns, combined with the weight of the guns themselves and the large amounts of ammunition they require make investing into Strength points at character creation a prudent choice for players planning to use these weapons as their mainstays. Most, if not all, big guns in Fallout are burst weapons exclusively, meaning that players cannot make targeted attacks with them. This makes taking the Fast Shot trait a much more viable option for big gun enthusiasts, as they enjoy the benefits of the trait without the drawback.

Affected weaponsEdit

Fallout 2 and Fallout TacticsEdit

\text{Initial level}\%=2\times\text{Agility}

Example: A starting Agility of 5.


As with Fallout, Big Guns operates in much the same way in Fallout 2 and Fallout Tactics.

Affected weaponsEdit

Fallout 2
Fallout Tactics

Fallout 3Edit

Bobblehead Big Guns

"The best way to win an argument is to be the loudest."

\text{Initial level}=2+(\text{Endurance}\times2)+\left\lceil\frac{\text{Luck}}{2}\right\rceil

Example: A starting Endurance of 5 and Luck of 5.


As this skill increases, so does the accuracy and damage with all of these weapons, both in and out of V.A.T.S. mode.

Ways to increase Big Guns skillEdit


Affected weaponsEdit

Fallout: Brotherhood of SteelEdit

While the game doesn't have the ability to increase the effectiveness of big guns, there are some weapons that are listed as such.

Affected weaponsEdit


  • In Fallout: New Vegas, Big Guns was merged with the Small Guns skill forming Guns (minigun, light machine guns), Energy Weapons (flamethrower, incinerator) and Explosives (grenade launchers, missile launchers). Van Buren, the canceled Fallout 3, would have done the same, though under the name of Firearms.
  • According to the Vault Dweller's memoirs, the Vault Dweller canonically used a big gun to destroy the vats of FEV and kill the Master in the original Fallout. In his own words: "None could stand in my way. I had a mission. I had a goal. I had a really large gun."

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