.400 Jeffery Nitro Express

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.400 Jeffery Nitro Express
Illustration from the 1938-39 Westley Richards brochure
Type	Rifle
Place of origin	United Kingdom
Production history
Designer	W.J. Jeffery & Co
Designed	1902
Produced	1902–present
Specifications
Parent case	.450/400 Black Powder Express
Case type	Rimmed, bottleneck
Bullet diameter	.410 in (10.4 mm)
Neck diameter	.440 in (11.2 mm)
Shoulder diameter	.520 in (13.2 mm)
Base diameter	.548 in (13.9 mm)
Rim diameter	.625 in (15.9 mm)
Rim thickness	.065 in (1.7 mm)
Case length	3.00 in (76 mm)
Overall length	3.75 in (95 mm)
Case capacity	117.0 gr H2O (7.58 cm3)
Rifling twist	1-15 in (381 mm)
Primer type	Boxer
Maximum pressure	40,611 psi (280.00 MPa)
Ballistic performance
Bullet mass/type Velocity Energy 400 gr (26 g) 2,100 ft/s (640 m/s) 3,920 ft⋅lbf (5,310 J)
Test barrel length: 26 inches Source(s): Kynoch[1] & Barnes.[2]

The .400 Jeffery Nitro Express or .450/400 Nitro Express 3-inch is a medium bore, bottlenecked, Nitro Express cartridge designed by W.J. Jeffery & Co in 1902, intended for use in single shot and double rifles.

Development

The W.J. Jeffery & Co developed the .400 Jeffery NE from the .450/400 3-1⁄4-inch Nitro Express, following extraction problems with the latter cartridge.

The .450/400 3-1⁄4-inch NE was recreated by loading the old

Use

The .450/400 NE in both the 3-inch and 3-1⁄4-inch versions were extremely popular in Africa and India, prior to the introduction of the

In his African Rifles and Cartridges, John "Pondoro" Taylor stated the 3-inch and 3-1⁄4-inch .450/400 NE cartridges to be "the grandest weapons imaginable for all big game hunting" adequate for all African game in almost all conditions when used by an experienced hunter.^[6] He further stated "I derived greater pleasure from using the .400 than any other calibre; and no weapon behaved more successfully in my hands. I would happily finish the remainder of my career with a pair of them and nothing else-unless it was a third!"^[6]

Major Percy Powell-Cotton wrote the "Jeffery .400 ejector express rifle I first carried in my Abyssinian expedition is my favourite weapon for dangerous game. With all nickel-covered bullets it is excellent for head or heart shots at elephant. With the lead just showing at the nose they do good work on rhino and buffalo; whilst with half the lead exposed I do not think you can get a better weapon for lion."^[6]

Elmer Keith stated this cartridge would be his first choice when hunting brown bear in Alaska.^[2]

Jim Corbett used this cartridge to hunt man-eating tigers and leopards in India.

See also

• Nitro Express
• List of rifle cartridges
• 10 mm caliber other cartridges of similar caliber size.

References

External links

Wikimedia Commons has media related to .400 Jeffery Nitro Express.

• African Hunting Gazette, ".450/400 Nitro Express 3" (Jeffery)", africanhuntinggazette.com, retrieved 11 August 2018.
• Ammo-One, ".450/400 Nitro Express", ammo-one.com, retrieved 7 November 2017.
• Cartridgecollector, ".400 3 inch Jeffery Nitro Express", cartridgecollector.net, retrieved 7 November 2017.
• The Spanish Association of Cartridge Collectors, ".450/.400 Nitro Express 3 inch", municion.org Archived 2017-10-16 at the Wayback Machine, retrieved 7 November 2017.