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

Characteristics

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.

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.

Variants

There are two variants of 10mm ammunition:

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

Weapons using this ammunition

Fallout

Weapon Ammo Performance vs. armor
None Leather jacket Leather armor Metal armor Combat armor Power armor Advanced power armor
10mm pistol
10mm submachine gun
10mm AP/JHP

5 - 12

4 - 9.6

2.25 - 7.5

0.7 - 5.6

0 - 4.2

-4.2 - 0

-4.5 - -1.35

Fallout 2

Weapon Ammo Performance vs. armor
None Leather jacket Leather armor Metal armor Combat armor Power armor Advanced power armor
10mm pistol
10mm submachine gun
10mm AP

2.5 - 7.5

2.1 - 6.3

0 - 4

-1.9 - 1.9

-2.55 - 0.85

-8.5 - -5.1

-9.1 - -6.3

10mm pistol
10mm submachine gun
10mm JHP

7.5 - 18

5.5 - 13.2

4 - 11

2.7 - 9

1.75 - 6.65

-0.7 - 4.2

-1 - 1.8

H&K P90c 10mm AP

7.5 - 10

6.3 - 8.4

4 - 6

1.9 - 3.8

0.85 - 2.55

-5.1 - -3.4

-6.3 - -4.9

H&K P90c 10mm JHP

18 - 24

13.2 - 17.6

11 - 15

9 - 12.6

6.65 - 9.45

4.2 - 7

1.8 - 3.4

Pipe rifle 10mm AP

7.5 - 10

6.3 - 8.4

4 - 6

1.9 - 3.8

0.85 - 2.55

-5.1 - -3.4

-6.3 - -4.9

Pipe rifle 10mm JHP

18 - 24

13.2 - 17.6

11 - 15

9 - 12.6

6.65 - 9.45

4.2 - 7

1.8 - 3.4

Locations

Fallout

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 2

10mm AP:

Behind the scenes

Chris Taylor stated that 10mm was "standard ammo for the BATF" as "the military was into energy weapons."[1]

References

  1. Question: "10MM pistols and SMGs were abundant in Fallout. Was 10MM ammo standard ballistic military issue at the time of the war?"
    Chris Taylor: "It was the standard ammo for the BATF. The military was into energy weapons."
    (vault13.net)
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