Icon disambig
For an overview of 10mm ammunition types in the Fallout series of games, see 10mm.

10mm is a type of ammunition in Fallout and Fallout 2.


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.


The 10mm is the most common ammo found in the wasteland. The JHP is intended to shoot low-armored targets, while AP gives more power to cut through armors, but has lower overall damage.

Weapons using this ammunitionEdit


There are two variants of 10mm ammunition:

  • 10mm AP (Ammunition. Caliber: 10mm, armor piercing.)
  • 10mm JHP (Ammunition. Caliber: 10mm, jacketed hollow-points.)



10mm AP:

10mm JHP:

  • Standard starting inventory includes 48 10mm JHP rounds.
    • Tagging Small Guns increases this by an additional 24 rounds.
  • Various merchants sell the ammunition.
  • Raiders during the quest Help Irwin carry the ammunition.

Fallout 2Edit

10mm AP:


In Fallout, ammunition modifiers are not applied properly which makes the 10mm equal to any other kind of ammunition and both JHP and FMJ versions functionally identical.


Community content is available under CC-BY-SA unless otherwise noted.

Fandom may earn an affiliate commission on sales made from links on this page.

Stream the best stories.

Fandom may earn an affiliate commission on sales made from links on this page.

Get Disney+