9.3×62mm

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9.3×62mm
9.3x62mm-Norma-Oryx-15g(232gr)-cartridge.png
The 9.3×62mm cartridge.
TypeRifle
Place of originGerman Empire
Production history
DesignerOtto Bock
Designed1905
Produced1905–present
Specifications
Case typeRimless, bottleneck
Bullet diameter9.30 mm (0.366 in)
Neck diameter9.92 mm (0.391 in)
Shoulder diameter11.45 mm (0.451 in)
Base diameter12.10 mm (0.476 in)
Rim diameter11.95 mm (0.470 in)
Rim thickness1.30 mm (0.051 in)
Case length62.00 mm (2.441 in)
Overall length83.60 mm (3.291 in)
Case capacity5.07 cm3 (78.2 gr H2O)
Rifling twist360 mm (1-14.17 in)
Primer typeLarge rifle
Maximum pressure )390.00 MPa (56,565 psi)
Ballistic performance
Bullet mass/type Velocity Energy
230 gr (15 g) Norma Ecostrike 2,641 ft/s (805 m/s) 3,563 ft⋅lbf (4,831 J)
232 gr (15 g) Norma Oryx 2,625 ft/s (800 m/s) 3,551 ft⋅lbf (4,815 J)
285 gr (18 g) Norma Oryx 2,362 ft/s (720 m/s) 3,544 ft⋅lbf (4,805 J)
275 gr (18 g) Norma Solid 2,450 ft/s (750 m/s) 3,666 ft⋅lbf (4,970 J)
286 gr (19 g) Swift A-Frame 2,362 ft/s (720 m/s) 3,544 ft⋅lbf (4,805 J)
Test barrel length: 610 millimetres (24 in)
Source(s): Norma[1]
From left to right 9.3×62mm, .30-06 Springfield, 7.92×57mm Mauser, 6.5×55mm and .308 Winchester cartridges.
Norma Oryx Soft Point cartridges in plastic holder (producer Norma Precision AB, Sweden)

The 9.3×62mm (also known as 9.3×62mm Mauser) is a rimless, bottlenecked rifle cartridge designed in 1905 by German gunmaker Otto Bock. It is suitable for hunting medium to large game animals in Africa, Europe, and North America. At a typical velocity of 720 m/s (2362 ft/s), its 286 gr (18.5 g) standard load balances recoil and power for effective use at up to about 250m (275 yds). The C.I.P. Maximum Average Pressure (MAP) for the 9.3×62mm is 390.00 MPa (56,565 psi).[2]

The 9.3×62mm was designed to fit into the Mauser 98 bolt-action rifle.[2] European hunters and settlers in Africa often chose military rifles for their reliability and low cost, but colonial governments in Africa fearful of rebellions often banned military-caliber rifles and ammunition. The 9.3×62mm was never a military cartridge and so never had this problem. Like their military counterparts, Mauser rifles chambered in 9.3×62mm were relatively inexpensive and quite reliable. Because of these factors 9.3x62mm quickly became popular and usage of the cartridge became widespread.

The 9.3×74mmR is a rimmed cartridge that evolved from the 9.3×72mmR black powder cartridge. The energy levels of the 9.3×62mm and 9.3×74mmR cartridges are similar but the cartridges are unrelated. The rimmed cartridge is slightly longer than the 9.3x62mm, allowing for lower pressure in the case while retaining muzzle velocity and energy.

Ammunition[edit]

The 9.3×62mm was first loaded with a 18.5 grams (285 gr) bullet at a muzzle velocity of 655 m/s (2,150 ft/s). After World War I some companies increased the velocity to around 730 m/s (2,400 ft/s), and brought out lighter bullets. Rifles set up for the original load must have their sights readjusted to shoot the newer load to point of aim. Adding to the confusion, loads at both velocities are available today. Several European firms load 9.3×62mm ammunition, including Lapua, Norma, RWS, SAKO, and PPU (Prvi Partizan) as well as PMP of South Africa, and it is widely available in Africa.[3]

In England, Kynoch the well-known cartridge manufacturer, produced ammunition, referring to the 9.3×62mm as '9.3mm Mauser'. Typically it was loaded as 'Metal Covered Soft Nose Bullet', 18.5 grams (285 gr) with the base marked simply Kynoch 9.3 mm. This is no longer listed by them.

Elsewhere[edit]

In several European countries, the 9.3x62mm remains a popular cartridge for hunting game like moose and wild boar, and it is offered as a standard chambering in rifles from most makers there. The rugged, inexpensive CZ 550 rifle in 9.3x62mm became available in North America in 2002, and both are gaining a strong following there, as the cartridge has a slight power edge over the popular .35 Whelen cartridge. In US, most ammunition makers like Federal, Hornady, Nosler, and Swift offer factory loaded 9.3x62mm sporting ammunition. Canadian hunters have long known about and used the 9.3×62mm cartridge to hunt all of the large game of Canada including bison, all the deer species and large bears. Surplus Scandinavian and European Mausers have been brought into Canada in 9.3 calibre since the early 1950s. In recent years, CZ of Czech Republic, as well as SAKO and Tikka of Finland have imported many 9.3x62mm rifles to Canada, and US where demand continues to be high.

Adequacy[edit]

The 9.3×62mm is considered ideal for hunting the larger and tougher African game species, such as lions, leopards, gemsboks, elands, and wildebeests. Most hunters consider it a viable all-around cartridge comparable to .338 Winchester Magnum, 9.3×64mm Brenneke, and .375 H&H Magnum. The 9.3×62mm has taken cleanly every dangerous game species in Africa. Though it is of smaller bore than the legal minimum .375 calibre for dangerous game in most countries, many countries specifically make an exception for the 9.3×62mm.[4][5][6] The 9.3×62mm is considered adequate for European and North American game animals that may become dangerous, such as feral hogs and bears.

Sambar hunters in Australia are turning to the 9.3×62mm due to Federal Government's 1996 ban on self-loading rifles.[citation needed] Thousands of deer hunters at once needed bolt-action rifles which delivered one-shot knockdown power on Sambar, and the 9.3×62mm calibre has proven to be well up to that task.

See also[edit]

References[edit]

  1. ^ 9.3x62mm data from Norma
  2. ^ a b "Greatest Cartridges: 9.3×62 Mauser, Effective on About Everything". gundigest.com. Retrieved 3 March 2017.
  3. ^ "The 9.3x62mm Mauser". thebiggamehuntingblog.com. Retrieved 3 March 2017.
  4. ^ Minimum required caliber for hunting Africa
  5. ^ "Minimum Calibers for Africa". Archived from the original on 14 July 2014. Retrieved 10 February 2015.
  6. ^ Hunting Laws & Rifle Importation NAPHA Namibia Professional Hunting Association

External links[edit]