All 9mm rounds are not the same.

9mm Luger

This round is also known as the9x19 Parabellum

  • 9mm parabellum
  • 9 x 19mm

The 9mm Luger has a case length of 19.15mm with a total overall round length of 29.69mm.  The bullet diameter is 9.03mm.

 

9mm Makarov9mmMakarov

This round is also known as the

  • 9 x 18mm

The 9mm Makarov has a case length of 18.10mm with a total overall round length of 25.  The bullet diameter is 9.25mm

 

9mm Browning9mm Browning

This round is also known as

  • .380 Automatic Colt Pistol (ACP)
  • .380 Auto,
  • 9mm Browning
  • 9mm Corto
  • 9mm Kurz
  • 9mm Short
  • 9×17mm
  • 9 mm Browning Court

The 9mm Browning has a case length of 17.3mm with an overall round length of 25mm.  The bullet diameter is 9mm.

 

9mm Ultra

This round is also known as the

  • 9×18 Ultra.  (Not interchangeable with the 9mm Browning)

The case length is 18.288mm with a bullet diameter of 9.1mm.

 

.38 ACP38 ACP

This is also known as the

  • .38 Auto (NOT interchangeable with the .380ACP)

The case length is 22.9mm with an overall length of 32.5mm.  The bullet diameter is 9.0mm.

 

Other 9mm variations include:

  • 9 x 21mm Gyurza.  Case 20.9mm.  Round 32.7mm.  Bullet 9.05mm..357 Sig
  • 9 x 21mm IMI.  Case 21.15mm.  Round 29.75mm.  Bullet 9.03mm.
  • .357 Sig.  Necked case 21.97mm.  Round 28.96mm.  Bullet 9.02mm.
  • 9 x 25mm Mauser.  Case 24.9mm.  Round 32.8mm.

 

There are many more rounds with a 9mm bullet head to be found throughout the world.  There are also a number of wildcat designs that use altered parent cases to produce the specific round.

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