8×59mm Rb Breda

8×59mmRB Breda was an Italian heavy arms cartridge. It is unusual in that it is one of the small number of cartridges designed with a rebated rim, meaning the rim of the cartridge is smaller in diameter than the body of the cartridge. The "RB" in the designation stands for "rebated rim".

8×59mmRb Breda
A Breda cartridge discovered buried in the ground
TypeMachine gun
Place of originItaly, Kingdom of Italy
Service history
In service1935–1960s
Used byItaly, Portugal[1]
WarsWorld War II, Portuguese Colonial War[1]
Production history
Parent caseunknown
Case typerebated rim, bottleneck
Bullet diameter8.36 mm (0.329 in)
Neck diameter9.14 mm (0.360 in)
Shoulder diameter10.80 mm (0.425 in)
Base diameter12.49 mm (0.492 in)
Rim diameter11.92 mm (0.469 in)
Rim thickness1.40 mm (0.055 in)
Case length58.84 mm (2.317 in)
Overall length80.44 mm (3.167 in)
Primer typelarge rifle
Ballistic performance
Bullet mass/type Velocity Energy
208 gr (13 g) 2,600 ft/s (790 m/s) 4056J
Source(s): [2]

History and Usage

8x59mmRB Breda was a caliber created for use by the Royal Italian Army in World War II. The cartridge was originally designed for use in anti-aircraft heavy machine guns like the Breda M37, Breda M38, and Fiat–Revelli Modello 1935. It was introduced in 1935 but is no longer in production today.

 Italy Italy manufactured ammunition during the brief period the Breda machineguns were in Italian service.
 Albania Albania manufactured ammunition after World War Two to use in Italian machineguns they captured during World War 2.


  1. Abbott, Peter, and Rodrigues, Manuel, Modern African Wars 2: Angola and Mozambique, 1961-1974, Osprey Publishing (1998), p. 18
  2. Johnson, Melvin M., Jr. (1944). Rifles and Machine Guns. New York: William Morrow & Company. p. 384.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.