9.3x62mm

9.3x62mm

The 9.3x62mm cartridge next to the 30-06, 7.92x57mm Mauser, 6.5x55 mm and .308 Winchester.

Type Rifle
Place of origin German Empire
Production history
Designer Otto Bock
Designed 1905
Produced 1905-Present
Specifications
Case type Rimless, bottleneck
Bullet diameter 9.3 mm (0.37 in)
Neck diameter 9.9 mm (0.39 in)
Shoulder diameter 11.4 mm (0.45 in)
Base diameter 12.1 mm (0.48 in)
Rim diameter 11.9 mm (0.47 in)
Rim thickness 1.3 mm (0.051 in)
Case length 62.0 mm (2.44 in)
Overall length 83.6 mm (3.29 in)
Rifling twist 350 mm (1-14")
Primer type Large rifle
Ballistic performance
Bullet weight/type Velocity Energy
15.0 g (231 gr) Oryx 800 m/s (2,600 ft/s) 4,810 J (3,550 ft·lbf)
16.2 g (250 gr) SP 780 m/s (2,600 ft/s) 5,052 J (3,726 ft·lbf)
18.5 g (285 gr) SP 720 m/s (2,400 ft/s) 4,805 J (3,544 ft·lbf)
19.0 g (293 gr) SP 740 m/s (2,400 ft/s) 5,209 J (3,842 ft·lbf)

The 9.3x62mm (in the USA also known as the 9.3 x 62 Mauser) is an 'all-around firearms cartridge' suitable for hunting larger species of animals in Africa, Europe, or North America. It was introduced by Otto Bock in 1905. At 730 m/s (2400 ft/s), its 18.5-gram (285 gr) standard load balances recoil and power for effective use at up to about 250 m (270 yards). The CIP Maximum Average Pressure (MAP) for the 9.3x62mm is 390 MPa (56 500 PSI)

History

The 9.3x62mm was developed around 1905 by Berlin gunmaker Otto Bock, who designed it to fit into the Model 1898 Mauser bolt-action rifle. African hunters and settlers often chose military rifles for their reliability and low cost, but governments fearful of colonial rebellions often banned military-caliber bolt-action magazine rifles and their ammunition. The 9.3x62mm was never a military cartridge and so never had this problem. Mausers in 9.3x62mm were inexpensive and reliable, too, so their popularity in Africa grew quickly and became widespread.

The 9.3x74R is a rimmed 9.3 mm cartridge that evolved from the 9.3x72 black powder cartridge. The energy levels of the 9.3x62 and 9.3x74R cartridges are similar but in developmental terms are distinct as the cartridges are unrelated. The rimmed cartridge is slightly longer, allowing for lower pressure in the case while retaining muzzle velocity.
[edit] Ammunition

The 9.3x62 was first loaded with a 18.5-gram (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 9.3x62mm Mauser ammunition, including Lapua, Norma and RWS, PPU (Prvi Partizan) as well as PMP of South Africa, and it is widely available in Africa.

Also in England, KYNOCH (the Imperial Metal Industries [Kynoch] Limited, Birmingham 6, England), the well-known cartridge manufacturer, produced ammunition, referring to the 9.3x62mm as the '9.3 mm Mauser'. Typically it was loaded as 'a 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.
[edit] Elsewhere

The 9.3x62mm is popular in Europe, especially in the Nordic countries where it is primarily used for short-range forest hunts for moose. The rugged, inexpensive CZ 550 rifle became available in 9.3x62mm 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.

Canadian hunters have long known about and used the 9.3x62mm cartridge to harvest all of the large game of Canada including buffalo, 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 series rifles, as well as Sako and Tikka of Finland have imported many rifles in 9.3x62mm calibre to Canada where demand continues to be high. Canadian handloaders too, have adopted this cartridge with open arms.

The cartridge is very simple and easy to load with easily obtainable Norma brass and the availability of good bullets from Nosler in 250-grain (16 g) accubonds and 286-grain (18.5 g) partitions; 286-grain (18.5 g) Hornady recoil proof; and 270-grain (17 g) Speer. When loaded with proper amounts of Hodgdon Varget velocities of 2350-2550 ft/s with these bullet weights is simple to produce and makes this cartridge economical and powerful. A no nonsense hunting rifle for the backwoods could be a synthetic stocked, iron sighted bolt action with a receiver sight chambered in 9.3x62mm, with handloaded 286-grain (18.5 g) Nosler partitions. A hunter so equipped could harvest any animal in North America out to 250 metres with ample power and tolerable recoil.
[edit] Adequacy

The 9.3x62mm is ideal for eland, zebra, giraffe and wildebeest, and most who hunt in Africa consider it a viable all-around cartridge comparable to the .338 Winchester Magnum, the 9.3x64mm Brenneke, the .375 H&H Magnum and the .404 Jeffery. The 9.3x62mm has taken cleanly every dangerous species on the continent. Though it is of smaller bore than the legal minimum for dangerous game in most countries, the .375 H&H, many countries specifically make an exception for the 9.3x62mm. The 9.3x62mm is considered adequate for European and North American game that may become dangerous, such as feral hogs and the great bears. Sambar hunters in Australia are turning to the 9.3x62mm, the deer hunter's favourite rifle has changed due to the Howard (Federal) Government's ban on self-loading rifles (1994), a great many Sambar hunters were well catered for by the various makes of self-loading rifles that were available in .30-06 and like calibres, when the self-loaders were banned there was a buy-back and suddenly thousands of deer hunters were looking for bolt-action rifles that delivered one-shot knockdown power on Sambar deer, the 9.3x62mm calibre has proven to be well up to that task and now rifle manufacturers are including the calibre in their standard model lineup (Sako is a good example) and most gunshops carry factory loads in packets of 20 rounds although the price is still high at about AU$35.00 per 20 compared to .30-06 at about AU$25.00 per 20. For the handloader most every major manufacturer of bullets offer something for the 9.3mm. Barnes offers both their TSX bullets as well as their excellent Banded Solids in both 250 and 286 grains, Nosler offers the Partition and Accubond. Swedish company Norma offers several bullets in 9.3mm including it's bonded Oryx. As well Hornady and Speer both offer conventional softpoints. Swift offers their A-Frame in 250 and 300 grain weights. Australian bullet manufacturer Woodleigh, catering to the dangerous game hunter, offers it's bullets in the widest range or weights and profiles ranging from a 250 grain softpoint to the buffalo-flattening 320 grain solid.

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2 Comments

4 years 37 weeks ago, 9:24 PM

raffycanlas

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yo snake!

the 6.5x55mm cartridge is what the tojos used with the arisaka bolt action right?

I'm just another damn yankee with a loaded gun looking for some fun!
3 years 8 weeks ago, 3:25 PM

Saint J.M. Browning

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6.5x55

The 6.5x55 is a Swedish round. The Ariska used a 6.5x50. That was being phased out in WWII to the 7.7mmx58mm.

"I don't think Hank done it this way" - Waylon
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