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For an overview of 10mm ammunition types in various Fallout games, see 10mm.

The 10mm round is a type of ammunition in Fallout 3.


Main article: 10mm
Before the War, the powerful 10mm Automatic round was the standard ammunition for the Bureau of Alcohol, Drugs, Tobacco, Firearms and Lasers and other law enforcement agencies, while the military was more reliant on experimental energy weapons (although it remained the round of choice for conventional pistols and submachine guns).[1] The Circle G brand of ammunition was one of the most popular, offering excellent centerfire cartridges for a variety of applications.


It is the most common type of ammunition in the Capital Wasteland, with the second most common being the .32 caliber round. The weapons that use the ammunition are also common, and there are many different types of guns with different statistics which use them, making this ammunition very useful. Made by G, it comes in ammunition boxes of 12 rounds.

Weapons using this ammunitionEdit

Icon cut contentThe following is based on developer test content cut from Fallout 3 and has not been confirmed by canon sources.
Icon cut contentEnd of information based on developer test content cut from Fallout 3.



The Lone Wanderer is given a 10mm pistol, along with 36 10mm rounds, if the right speech options are chosen during Escape!



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