.255 Jeffery Rook
The.255 Jeffery Rook / 6.5x29mmR, also known as the.255 Jeffery Rook Rifle, is an obsolete small bore intermediate firearm cartridge.
.255 Jeffery Rook

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- rifle cartridge.
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The.255 Jeffery Rook / 6.5x29mmR, also known as the.255 Jeffery Rook Rifle, is an obsolete small bore intermediate firearm cartridge.
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wikipedia incomplete · checked 25 September 2026
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wikidata · Q30250490 · wikipedia · .255 Jeffery Rook
In this article
Overview
The.255 Jeffery Rook is a rimmed centerfire cartridge. It was loaded with both black powder and smokeless powders, usually with a 65 gr (4.2 g) lead solid or hollowpoint bullet at a standard muzzle velocity of 1,200 ft/s (370 m/s). The.255 Jeffery Rook was developed by W. J. Jeffery & Co. and originally designed for use in rook rifles for hunting small game and target shooting. It gained an excellent reputation for accuracy and was widely used for target shooting before being superseded by the.22 Long Rifle as a miniature target round, and it was also chambered in some single-shot pistols. Major Percy Powell-Cotton carried a W. J. Jeffery & Co. rook rifle chambered in.255 Jeffery Rook on a number of his expeditions stating it "is often better than the shot-gun for collecting specimens and providing for the pot."
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- “.255 Jeffery Rook”, English Wikipedia, consulted as further reading
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- Wikidata, structured authority record Q30250490:.255 Jeffery Rook
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Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Frank C. Barnes, Cartridges of the World, 15th ed, Gun Digest Books, Iola, 2016, .
- 2.Imperial War Museums, ".255 Jeffery rook rifle", iwm.org.uk, retrieved 18 April 2017.
- 3.Major P. H. G. Powell-Cotton, In unknown Africa: a narrative of twenty months' travel and sport in unknown lands and among new tribes, Hurst & Blackett, London, 1904.
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1- rifle cartridgeTerminology
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