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Pulled this off of the web...

The.404 Jeffery is a large-caliber, rimless cartridge designed for large, dangerous game, such as the "Big Five" of Africa. Other names for this cartridge include.404 Jeffery Rimless, .404 Rimless Nitro Express, and 10.75× 73mm. It was created by W.J. Jeffery & Co of England based on their desire to duplicate performance of the.450/400 cartridge. There are two basically similar sets of dimensions for this case, depending on the manufacturer. The.404 Jeffery as originally loaded fired a.423" diameter bullet of either 300 gr with a muzzle velocity of 2,600 ft/s and muzzle energy of 4,500 foot-pounds force or 400 gr with a muzzle velocity of 2,125 ft/s and 4,020 foot-pounds force of energy. It is very effective on large game and is favored by many hunters of dangerous game. Performance and recoil are similar to other African dangerous game cartridges. The.404 Jeffery was popular with hunters and game wardens in Africa because it gave good performance with a manageable level of recoil. By way of comparison, the.416 Rigby and.416 Remington Magnum both fire a 400 grain.416 in bullet at 2,400 feet per second with a muzzle energy of approximately 5,000 foot-pounds force, which handily exceeds the ballistic performance of the.404 Jeffery but at the price of greater recoil and, in the case of the.416 Rigby, rifles that are significantly more expensive.

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This idiot writer uses .404 Jeffery ballistics from 1910 to .416 Rem ballistics from 2010, and thinks it is a valid comparison ....

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John aka NitroX

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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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