.450/400 Magnum Nitro Express


This was originally a black powder cartridge dating back to 1880 or even earlier and it was listed in the Kynoch catalogue of 1884 as the 450 reduced to 400. During the 1890's it evolved as a smokeless cartridge and was used in falling block single shot rifles as well as a number of double rifles.
BULLET
WEIGHT
IN
GRAINS
BARREL
LENGTH
IN
INCHES
PRESSURE
at 15°C in
tons per
sq. in.
MUZZLE
50 YARDS
100 YARDS
VELOCITY
Feet per
Second
ENERGY
Foot/lbs
VELOCITY
Feet per
Second
ENERGY
Foot/lbs
VELOCITY
Feet per
Second
ENERGY
Foot/lbs
400g S/SN
26"
16.5
2150
4110
2060
3780
1980
3490

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