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Revision as of 00:12, 16 December 2015
| .333 Jeffery | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Rifle | |||||||||||
| Place of origin |  United Kingdom | |||||||||||
| Service history | ||||||||||||
| In service | UK | |||||||||||
| Used by | British Army | |||||||||||
| Wars | World War I | |||||||||||
| Production history | ||||||||||||
| Designer | W.J. Jeffery & Co | |||||||||||
| Designed | 1908 | |||||||||||
| Manufacturer | W.J. Jeffery & Co | |||||||||||
| Specifications | ||||||||||||
| Parent case | .404 Jeffery | |||||||||||
| Case type | Rimless, bottlenecked | |||||||||||
| Bullet diameter | .333 in (8.5 mm) | |||||||||||
| Neck diameter | .365 in (9.3 mm) | |||||||||||
| Shoulder diameter | .500 in (12.7 mm) | |||||||||||
| Base diameter | .545 in (13.8 mm) | |||||||||||
| Rim diameter | .543 in (13.8 mm) | |||||||||||
| Rim thickness | .050 in (1.3 mm) | |||||||||||
| Case length | 2.475 in (62.9 mm) | |||||||||||
| Overall length | 3.500 in (88.9 mm) | |||||||||||
| Case capacity | 84.0 gr H2O (5.44 cm3) | |||||||||||
| Maximum pressure | 46,000 psi (320 MPa) | |||||||||||
| Ballistic performance | ||||||||||||
| ||||||||||||
| Test barrel length: 28 inches Source(s): Kynoch[1] & Barnes[2] | ||||||||||||
| .333 Jeffery Flanged | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Specifications | ||||||||||||
| Case type | Rimmed, bottlenecked | |||||||||||
| Bullet diameter | .333 in (8.5 mm) | |||||||||||
| Neck diameter | .356 in (9.0 mm) | |||||||||||
| Shoulder diameter | .484 in (12.3 mm) | |||||||||||
| Base diameter | .544 in (13.8 mm) | |||||||||||
| Rim diameter | .625 in (15.9 mm) | |||||||||||
| Case length | 2.50 in (64 mm) | |||||||||||
| Overall length | 3.49 in (89 mm) | |||||||||||
| Primer type | large rifle | |||||||||||
| Ballistic performance | ||||||||||||
| ||||||||||||
| Test barrel length: 28 inches Source(s): Kynoch[1] & Barnes.[2] | ||||||||||||
The .333 Jeffery and .333 Jeffery Flanged are medium bore centrefire rifle cartridges developed by W.J. Jeffery & Co and introduced in 1908.
.333 Jeffery
The .333 Jeffery also known as the .333 Jeffery Rimless Nitro Express or as the .333 Rimless Nitro Express is a rimless bottlenecked cartridge intended for use in magazine rifles, derived from the .404 Jeffery, it could be used in both standard and magnum length Mauser 98 actions.[3]
.333 Jeffery Flanged
The .333 Jeffery Flanged or .333 Flanged Nitro Express is the rimmed version of the . 333 Jeffery, intended for use in single shot and double rifles. It is loaded to slightly lower velocities than the rimless .333 Jeffery.
Use
While the cartridge is not intended for dangerous game, it was successfully used on all African game species up to elephant due to the excellent sectional density of the 300 gr (19 g) bullet.[2]
In his African Rifles and Cartridges, John "Pondoro" Taylor wrote of the .333 Jeffery "Time and again have I driven it the length of an animal’s body, and cut the perfectly mushroomed bullet out of his hindquarters. I have never had one break up." [4]
The cartridge was very similar in performance to the .318 Westley Richards, it was somewhat overshadowed by the arrival of the .375 Holland & Holland.[3]
The .280 Jeffery was created by Jeffery by necking down their successful .333 Jeffery to .288 inches.
WWI service
In 1914 and early 1915, German snipers were engaging British Army positions with impunity from behind steel plates that were impervious to .303 British ball ammunition. In an attempt to counter this threat, the British War Office purchased a number of larger calibre sporting rifles from British rifle makers, including .333 Jeffery rifles.[5]
In his Sniping in France 1914-18, MAJ H. Hesketh-Prichard, DSO, MC, stated "I proceeded to try on these plates all kinds of rifles, from Jeffery’s high velocity .333 to heavy elephant guns of various bores, and was delighted to find the bullets from the .333, as well as the elephant guns, pierced them like butter."[6]
See also
References
Footnotes
Bibliography
- Barnes, Frank C, Cartridges of the World, ed 13, Gun Digest Books, Iola, 2012, ISBN 9781440230592.
- Hesketh-Prichard, MAJ H., DSO, MC, Sniping in France 1914-18: With Notes on the Scientific Training of Scouts, Observers and Snipers, Helion & Company. ISBN 1-874622-47-7.
- Roberts, Paul, Nitro big game rifles, retrieved 13 Nov 15.
- Tate, Douglas, "Sporting guns that went to war", The Field Magazine, Vol 324 No 7321, August 2014, pp 100–103.
- Taylor, John, African rifles and cartridges, Sportsman’s Vintage Press, 2013, ISBN 978-1-940001-01-2.