Jack Stevens
AH veteran
Correct.The way Kevin Robertson puts it is "the 404 did all the work, and the 416 Rigby got all the glory." Many/most African conservation officers were issued 404 Jeffery.
The usual theory with respect to its widespread use by the indigenous workers employed by African game departments is that the rifles were affordable because Jeffrey “had released the cartridge to the trade,” meaning anyone could make a .404-chambered rifle. That’s as opposed to the pricey proprietary DGR rifles of the day, like those from Rigby and Westley Richards.
While partly true, as well as that .404 ammo was generally cheaper (back then), it was the .404’s actual ballistics out of real-world rifle barrels that made it immensely popular. In the typical magazine rifle, the .404 imparted the mildest felt-recoil of any of the .400-class cartridges then available, and so skinny Africa game-dept employees could shoot it accurately, under stress, without flinching. No worse than a .375 H&H firing a .300grn load.
Folks like to quote “2150fps” as the defacto standard velocity for .404 ammo with a 400grn/.423” dia bullet, but that was never the case in the field from factory production barrels. The difference is because Jeffrey, Kynoch, et. al, used factory test-barrel fixtures of 26”-28” in length to derive “box-flap” velocity rather than real-world .404 rifle barrels which tended to be 22”, 23”, or 24” in length.
Kynoch is a good example … For their 400grn .404 ammo they list a m.v. of 2125fps as derived from a 28” factory test barrel. From a 24” rifle barrel, the given velocity is 1900fps. In other words, the mild recoil and shootability of .404 Jeff rifles is because actual m.v. in the field ranged from 1900fps to maybe 2100fps as a maximum. My own personal AHR-built .404J sports a 23” Douglas barrel. What muzzle velocity would that same Kynoch ammo make from that barrel?
Yet, with a 400grn bullet, the cartridge still killed all the big dangerous stuff, which led to Taylor’s famous observation that “THE elephant gun” was always a reference to Jeffrey’s .404 and to nothing else.
The .404 Jeffrey
Calibre Description and SpecificationsThe .404 Jeffery is a large calibre rimless bottleneck cartridge that was originally designed with the dangerous game of A
africanxmag.com
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