6.5mm Bergmann

Short description: German centerfire pistol cartridge

6.5mm Bergmann

Bergmann model 1896 in 6.5 caliber

Type| Pistol
Place of origin| German Empire
Production history
Designer| Bergmann
Produced| 1895
Specifications
Case type| semi-rimmed
Bullet diameter| .26 in (6.6 mm)
Neck diameter| .285 in (7.2 mm)
Shoulder diameter| .330 in (8.4 mm)
Base diameter| .368 in (9.3 mm)
Rim diameter| .372 in (9.4 mm)
Case length| .870 in (22.1 mm)
Overall length| 1.230 in (31.2 mm)
Ballistic performance
| Bullet mass/type | Velocity | Energy

|
|

76 gr (5 g) FMJ | 710 ft/s (220 m/s) | 84 ft⋅lbf (114 J)
Source(s): "Textbook of Automatic Pistols" [1]

The 6.5mm Bergmann is an unusual centerfire cartridge produced for very early self-loading pocket pistols.

## Design

The case is bottle-necked and steeply conical, and headspaces on the conical case walls. Early versions were made without any rim or extraction groove; and relied upon blow-back for expulsion of the fired case from the chamber. Later Bergmann pistols provided an extractor requiring a groove which produced a semi-rimmed case.[1]

## See also

* Theodor Bergmann
* Bergmann 1896

## References

1. ↑ 1.0 1.1 *Wilson, R. K. Textbook of Automatic Pistols, pp.256-258. Plantersville, SC: Small Arms Technical Publishing Company, 1943.

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