9×18mm Ultra

9×18mm Ultra
TypePistol
Place of originNazi Germany
Service history
Used byWest German police
Production history
Designed1936
Specifications
Case typeRimless
Bullet diameter9.01 mm (0.355 in)
Shoulder diameter9.65 mm (0.380 in)
Base diameter9.81 mm (0.386 in)
Rim diameter9.37 mm (0.369 in)
Case length17.85 mm (0.703 in)
Overall length25.27 mm (0.995 in)
Primer typeBerdan or boxer small pistol
Ballistic performance
Bullet mass/type Velocity Energy
6.09 g (94 gr) JFP 320 m/s (1,000 ft/s) 312 J (230 ft⋅lbf)
6.48 g (100 gr) JFP 323 m/s (1,060 ft/s) 338 J (249 ft⋅lbf)

The 9×18mm Ultra is a German pistol cartridge. It was originally developed in 1936 for use by the Luftwaffe, but was not adopted at that time.