9x57mm Mauser

Infobox Firearm Cartridge
name=9x57mm Mauser


caption=
origin=flagcountry|German Empire
type=Rifle
designer= Unknown
design_date=1890s
manufacturer=
production_date=1890s-1938
number=
variants=9x57mmR (rimmed)
is_SI_specs=yes
parent=7.92x57mm Mauser
case_type=Rimless, bottleneck
bullet=9.1
neck=9.8
shoulder=10.9
base=11.9
rim_dia=11.9
rim_thick=1.3
case_length=56.8
length=81.0
rifling=350-400 mm (1 in 14-16 inches)
primer=Large rifle
is_SI_ballistics=yes
bwunit=gram
bw1=13.3
btype1=SP
vel1=739
en1=3636
bw2=15.9
btype2=SP
vel2=660
en2=3420
bw3=17.8
btype3=SP
vel3=560
en3=2830
bw4=18.2
btype4=SP
vel4=590
en4=3098
bw5=
btype5=
vel5=
en5=
test_barrel_length=600 mm (24 in)
balsrc= Cartridges Of The World"Cartridges Of The World 11th Edition", By Frank C. Barnes, Edited By Stan Skinner, ISBN 13: 978-0-89689-297-2, ISBN 10: 0-89689-297-2] The 9x57mm Mauser is a cartridge based on the 7.92x57mm Mauser. It uses the identical 57 mm-long cartridge case, with the same shoulder angle, but necked up to accept a 9 mm-diameter bullet. Ballistically - but not dimensionally - it is indistinguishable from the 9x56mm Mannlicher-Schoenauer. It is currently regarded as a semi-obsolete caliber, although hand-loading keeps it alive.

Performance

Firing a relatively heavy bullet of approximately 14-16 g (220-250 grains) at a modest velocity of about 670-700 m/s (2,200-2,300 ft/s), the 9x57mm is low in noise and recoil, pleasant to shoot, and regarded as accurate and effective on all but the very largest, most dangerous game at distances out to 250-300 m (300-350 yd).

The cartridge's low velocity combined with the heavy, poorly-streamlined bullet gave the 9x57 a rather poor trajectory, which made it unsuited to accurate shooting at longer ranges. This calibre was popular as a large-deer cartridge in Germany and Central Europe; and also in German spheres of influence in Africa in the early 20th century, such as German West Africa and German East Africa, where it was widely popular among European farmers and settlers for shooting plains game. [ [http://www.african-hunter.com/9x57_mauser.htm "African Hunter"] ] Fact|date=September 2007 It also accounted for a many lions and leopards. Its popularity was gradually eclipsed by the significantly more powerful, rather flatter-shooting 9.3 x 62 Mauser cartridge.The CIP Maximum Average Pressure (MAP) for the 9X57 is 280 MPa bar (40 600 PSI)

Firearms using the 9X57

Many beautifully made sporting rifles in 9x57mm caliber, often dating from well before 1939, are still giving their owners good service today,Fact|date=September 2007 but dependable, recently-made factory ammunition is increasingly expensive and hard to obtain, and many users must rely on handloading.

Many of these Mauser rifles were made from de-militarized WWI small ring M98 rifles by many gunsmiths throughout Germany, and usually these are rebored (oversized from 8X57). When barrels eventually wear out, 9x57 rifles are generally rebarrelled in other, more modern calibres.Fact|date=September 2007

The cartridge was popular around the world and was even chambered in Remington Model 30 and Winchester Model 54 rifles.

Commercial production

The Eley-Kynoch 9x57 cartridge manufactured by the company at its Birmingham, England factory up to the 1950s used fully-jacketed and soft-nosed, round-nosed, flat-based bullets weighing convert|16.1|g|gr, with an average muzzle velocity of convert|690|m/s|ft/s|abbr=on. Factory-loaded ammunition is now increasingly hard to come by, and most users handload, using either fire-formed 9x57 brass or modified 7x57 or 8x57 cases necked up to accept 9 mm diameter bullets.

There is also a derivative caliber popular in Sweden, the 9.3X57, which is quite similar but has slightly different case dimensions and for which Norma of Sweden is still manufacturing ammunition.

ee also

* List of rifle cartridges
* 9 mm caliber

References

External links