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NitroXAdministrator
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Reged: 25/12/02
Posts: 39896
Loc: Barossa Valley, South Australi...
Jeffery Proprietory calibres?
      #28974 - 06/04/05 02:52 AM

Jeffery had a .404 and a .500 which were bolt calibres.

They also had a .333 Jeffery. Was it another bolt action cartridge or also a double rifle cartridge as I am sure I have seen doubles in .333 (?)

Were any of the larger cartridges .450 or above proprietory Jeffery calibres or at least introduced by them?

Thanks.



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Marrakai
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Reged: 09/01/03
Posts: 3595
Loc: Darwin, Top End of Australia
Re: Jeffrey Proprietory calibres? [Re: NitroX]
      #28990 - 06/04/05 01:26 PM

W.J.Jeffery designed and produced a number of proprietry cartridges, as well as a number which were 'picked up' by the trade.

These include: .255 Jeffery, .275 Jeffery, .300 K Jeffery, .280 Rimless, .333 Jeffery Flanged, .333 Jeffery Rimless, .450/.400 3-inch NE, .404 Jeffery, .450 No.2, .475 No.2, .500 Jeffery Rimless, and the .600 NE.
Prolific, wouldn't you say?!!

His proprietry .475 No.2 ended up being different from the trade version. The jeffery round loaded 80gr cordite beneath a 500gr bullet of .489 dia. The trade version contained 85gr cordite under a 480gr bullet of .483 dia. MV and ME of the Jeffery cartridge were significantly lower than 'trade' ballistics.

The .400, .450 No.2, and .475 No.2 arose because Jeffery was concerned about the industry practice of loading smokeless cartridges which could fit into the old black-powder guns, with oft-disasterous consequences. He 'invented' stronger brass with thicker rims to circumvent this problem. When he developed the .600 NE (which was never a black-powder round), he simply stuck with the thicker rim etc for the new cartridge.

NitroX, your 'Indian Gentleman' is chambered for a Jeffery cartridge!!!

BTW, the best treatise on Jeffery's cartridge development is found in Wal Winfer's 'British Single Shot Rifles, Vol.3', a lengthy 39-page Chapter 5: "Cartridges Used in Jeffery Rifles". Great stuff!


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NitroXAdministrator
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Reged: 25/12/02
Posts: 39896
Loc: Barossa Valley, South Australi...
Re: Jeffrey Proprietory calibres? [Re: Marrakai]
      #28992 - 06/04/05 02:06 PM

In reply to:

NitroX, your 'Indian Gentleman' is chambered for a Jeffery cartridge!!!




Yes I did believe this to be the case. Thanks for the confirmation and the info on the rest of the band. Some of which I do remember eg the .450/400 3" and the .475 No. 2.


--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

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