Engineering:8×59mm Rb Breda
| 8×59mmRb Breda | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 A Breda cartridge discovered buried in the ground | ||||||||||||||||
| Type | Machine gun | |||||||||||||||
| Place of origin | Italy, Kingdom of Italy | |||||||||||||||
| Service history | ||||||||||||||||
| In service | 1935–1960s | |||||||||||||||
| Used by | Italy, Portugal[1] | |||||||||||||||
| Wars |
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| Production history | ||||||||||||||||
| Designed | 1935 | |||||||||||||||
| Produced | 1935–1960s | |||||||||||||||
| Specifications | ||||||||||||||||
| Parent case | unknown | |||||||||||||||
| Case type | rebated rim, bottleneck | |||||||||||||||
| Bullet diameter | 8.36 mm (0.329 in) | |||||||||||||||
| Neck diameter | 9.14 mm (0.360 in) | |||||||||||||||
| Shoulder diameter | 10.80 mm (0.425 in) | |||||||||||||||
| Base diameter | 12.49 mm (0.492 in) | |||||||||||||||
| Rim diameter | 11.92 mm (0.469 in) | |||||||||||||||
| Rim thickness | 1.40 mm (0.055 in) | |||||||||||||||
| Case length | 58.84 mm (2.317 in) | |||||||||||||||
| Overall length | 80.44 mm (3.167 in) | |||||||||||||||
| Rifling twist | 240[2] or 245[3] mm | |||||||||||||||
| Primer type | large rifle | |||||||||||||||
| Maximum pressure | 3150 atm | |||||||||||||||
| Ballistic performance | ||||||||||||||||
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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".
History and Usage
8×59mmRB 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 also used in the experimental Pavesi M42 semi-automatic rifle. It was introduced in 1935 but is no longer in production today.
Italy manufactured ammunition during the brief period the Breda machine guns were in Italian service.
Albania manufactured ammunition after World War Two to use in Italian machine guns they captured during World War 2.
References
- ↑ 1.0 1.1 Abbott, Peter, and Rodrigues, Manuel, Modern African Wars 2: Angola and Mozambique, 1961-1974, Osprey Publishing (1998), p. 18
- ↑ "Mitragliatrice Breda Mod 37 8mm 1940 | PDF". https://www.scribd.com/document/69417813/Mitragliatrice-Breda-Mod-37-8mm-1940.
- ↑ Istruzione sulla Mitragliatrice Fiat 35. Ministero della Guerra. https://www.forgottenweapons.com/wp-content/uploads/Fiat%20Revelli/Fiat-Revelli%201935%20Manual%20(Italian,%201941).pdf. Retrieved March 30, 2022.
- "8×59mm Breda, Italian Machine Gun Cartridge". ammo-one.com. http://www.ammo-one.com/8mmBredaItalianMachinegun.html.
"8x59 mm. / 8 mm.Breda/ 8mm. FIAT/8 mm. Modelo 35/ DWM 591". municion.org. http://www.municion.org/8x59/8x59.htm.
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