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The 600 Nitro Express is the  "Largest English*" Cartridge.
It was introduced in 1899 in a (2.8" long) and later grew  to (3" long):
it was never a Black Powder cartridge. The 600 Nitro Express has a very large 900 grain
solid projectile. * Note:  The 700 Nitro was introduced by Jim Bell, (U.S.A.) and is not
technically a British cartridge, although Kynoch of  England did also make some 700 Nitro.
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British Cartridges
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600 Nitro Express
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Below; please find 4 verision of the 600 Nitro Express available
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$ 89.95 per Cartridge
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"BB" Head Stamp.
Current production using Bertram brass from Australia
Custom Loaded with 900 grain Solid (FMJ) Projectile
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"A-Square" Head Stamp,
Produced by the now closesd A-Square in the Untired States,
With the famous 900 grain " Monolith" Projectile ,
NOW OBSOLETE
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"WR" Head Stamp.  900 Grain Soft Point
Older cartridges from a sealed Westley Richards Box made by Wolfgang
Romey in Petershagen, Germany.
"WR 600 Nitro and  pentagons" Head stamp, minor draw marks on cases
from the case drawing process, typical of Wolfgang Romey production. A
scarce item in the USA. (see cartridge below)
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"WR" Head Stamp.  900 Grain Solid (FMJ) Projectile
Older cartridges from a sealed Westley Richards Box made by Wolfgang
Romey in Petershagen, Germany.
"WR 600 Nitro and  pentagons" Head stamp, minor draw marks on cases
from the case drawing process, typical of Wolfgang Romey production. A
scarce item in the USA. (see cartridge below)
$ 99.95 per Cartridge
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"WR" Head Stamp.
Older cartridges from a sealed Westley Richards Box made by Wolfgang
Romey in Petershagen, Germany.
"WR 600 Nitro and  "pentagons" Head stamp, minor draw marks on cases
from the case drawing process, typical of Wolfgang Romey production. A
scarce item in the USA.
$ 89.95 per Cartridge
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$ 59.95 per Cartridge
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