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450/400 Nitro Express also called
400 Jeffery NE in 3" and 3 & 1/4"
The 450/400 Nitro Express (Nitro Express = Smokeless Powder or Cordite in 1907) was
introduce in 1907 by Jeffery to replace the 450/400 BPE  
(B.P.E. = Black Powder Express).
The 3" version was introduced as some of the  older 3&1/4 BPE  would stick
inside the chamber after firing.
There are two sizes of 450/400 Nitro Express 3" and 3&1/4" long
(4 different versions below)
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$39.95 per Cartridge
Eley 450-400 Nitro Head Stamp,         
3" Case, nickel plated, Jacketed Soft Point         
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Kynoch H/S, Soft Point  3"Case, please note Kynoch 400 Nitro,
Head /Stamp, denotes 400 Jeffery, which is 450/400
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British Cartridges
By Hornady, (3") 400 grain "DGS", Full Metal Jacket
Correct Head Stamp, $14.95 per cartridge, no limits
$29.95 for One Cartridge
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By Kynoch on England ( Hard to find 3 & 1/4")
400 grain Jacketed Soft Point, Correct "450-400
Kynoch" Head Stamp $ 29.95 per cartridge
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Hard to Find "ELEY" Production with  correct
" ELEY 450-400 NITRO" Head Stamp
3 " New production
by Hornady USA
3 & 1/4 " Older production
(Like new) by Kynoch of England
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