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.333 Jeffery Flanged
Type Rifle
Place of origin United Kingdom
Production history
Designer W.J. Jeffery & Co.
Designed 1908
Manufacturer Jeffery
Produced 1908-Present
Variants .333 Jeffery
Specifications
Case type Rimmed, bottlenecked
Bullet diameter .333 in (Bad rounding hereScript error mm)
Neck diameter .356 in (Bad rounding hereScript error mm)
Shoulder diameter .484 in (Bad rounding hereScript error mm)
Base diameter .544 in (Bad rounding hereScript error mm)
Rim diameter .625 in (Bad rounding hereScript error mm)
Case length 2.50 in (Bad rounding hereScript error mm)
Overall length 3.49 in (Bad rounding hereScript error mm)
Primer type large rifle
Ballistic performance
Bullet weight/type Velocity Energy
250 gr (Bad rounding hereScript error g) SP2,400 ft/s (Bad rounding hereScript error m/s)3,200 ft·lbf (Bad rounding hereScript error J)
300 gr (Bad rounding hereScript error g) SP2,150 ft/s (Bad rounding hereScript error m/s)3,090 ft·lbf (Bad rounding hereScript error J)
Test barrel length: 28 inches

The .333 Jeffery Flanged or .333 Flanged Nitro Express is a .333 caliber rimmed, bottlenecked rifle cartridge.[1] It was developed by the W.J. Jeffery & Co. in 1908 as a rimmed version of the .333 Jeffery and is intended for double rifles.[2]

General InformationEdit

The .333 Jeffery Flanged was designed for hunting medium game in India and Africa where it was quite popular. It has been used successfully against elephants due to the excellent sectional density of the 300-grain (Bad rounding hereScript error g) bullet, but is considered inadequate for dangerous game.[3] The performance of the .333 Jeffery Flanged mirrors that of the modern .338-06.

John "Pondoro" Taylor treated the cartridge favorably in his book African Rifles and Cartridges.[4]

The .333 Jeffery Flanged was originally loaded with cordite. It is loaded to slightly lower velocities than its rimless counterpart, the .333 Jeffery. Kynoch currently loads ammunition for this cartridge. The .318 Westley Richards was a close contemporary of the .333 Jeffery Flanged.

Bertramm Brass of Australia and Kynoch (by Kynamco) manufacture virgin brass. Factory ammunition is provided by Kynoch.[5]

See alsoEdit

ReferencesEdit

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