The 6.5×58mm Vergueiro is a

centerfire Two rounds of .357 Magnum, a centerfire cartridge; notice the circular primer in the center A center-fire (or centerfire) is a type of metallic cartridge used in firearms, where the primer is located at the center of the base of its casing (i. ...

rimless cartridge designed in 1904 specifically for the Mauser-Vergueiro, chosen as

service rifle A service rifle (or standard-issue rifle) is a rifle a military issues to its regular infantry. In modern militaries, this is generally a versatile, rugged, and reliable assault rifle or battle rifle, suitable for use in nearly all environments ...

of the

Portuguese Army The Portuguese Army () is the land component of the Portuguese Armed Forces, Armed Forces of Portugal and is also its largest branch. It is charged with the defence of Portugal, in co-operation with other branches of the Armed Forces. With its ...

. It was adopted to replace the rimmed 8×60mmR Guedes and 8×56mmR Kropatschek Corto cartridges originally filled with

blackpowder Gunpowder, also commonly known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of a mixture of sulfur, charcoal (which is mostly carbon), and potassium nitrate, potassium ni ...

, which had been used with

Kropatschek A Kropatschek is any variant of a rifle designed by Alfred von Kropatschek. Kropatschek's rifles used a tubular magazine (constructed of nickel-plated steel) of his design, of the same type used in the Japanese Murata Type 22 and the German ...

rifles procured in the mid-1880s.

Smokeless powder Finnish smokeless powder Smokeless powder is a type of propellant used in firearms and artillery that produces less smoke and less fouling when fired compared to black powder. Because of their similar use, both the original black powder formula ...

allowed for a higher velocity round and further calibre reduction to 6.5 mm, a step already taken by other European countries, e.g. Sweden (6.5×55mm Swedish) and Italy (6.5×52mm Carcano). It remained the service rifle cartridge until the

Karabiner 98k The Karabiner 98 kurz (; ), often abbreviated Karabiner 98k, Kar98k or K98k and also sometimes incorrectly referred to as a K98 (a K98 is a Polish carbine and copy of the Kar98a), is a bolt-action rifle chambered for the 7.92×57mm Mauser cartri ...

replaced the Mauser-Vergueiro pattern in 1939. The round was also used for sporting purposes, manufacturers like

DWM dwm is a minimalist dynamic window manager for the X Window System developed by Suckless that has influenced the development of several other X window managers, including xmonad and awesome. It is externally similar to wmii, but interna ...

and

Kynoch Kynoch was a manufacturer of ammunition that was later incorporated into ICI, but remained as a brand name for sporting cartridges. History The firm of Pursall and Phillips operated a 'percussion cap manufactory' at Whittall Street, in Birmin ...

offered it until the 1960s. In military use the common projectile weighs 155 grains and travels at up to per second. A lot of the Mauser-Vergueiro rifles were later rechambered to accept the standard 7.92×57mm cartridge of the newer Mauser 98k pattern.

References

{{DEFAULTSORT:6.5by58mm Vergueiro Pistol and rifle cartridges Military cartridges

See also

References