10mm

10mm is an ammunition type found in Fallout, Fallout 2, Fallout 3, Fallout: New Vegas, and Van Buren. 10mm ammo ranks as the most common Small Guns ammunition in all three published games, but was very rare by the time of Van Buren. In Fallout Tactics, it was replaced by 9mm ammo.

Background
Before the War, 10mm was the standard ammo for the Bureau of Alcohol, Drugs, Tobacco, Firearms and Lasers, while the military was more reliant on experimental energy weapons.

10mm Standard


A yellow cardboard box of high-velocity 10mm rounds.

10mm AP


Ammunition. Caliber: 10mm, armor piercing.

10mm JHP


Ammunition. Caliber: 10mm, jacketed hollow-points.

In Fallout:NV
10mm Standard Round

Behind the scenes

 * I picked 10mm since it wasn't popular, had been tested by the FBI at one point (and found lacking), but it was basically a gun nut (which I am one) kind of round. .45 might have made more sense, but I was looking for something with a little twist. - Chris Taylor