.500 No. 2 Express (.577/.500)
Type Rifle
Place of origin UK
Bullet diameter .507 in (Bad rounding hereScript error mm)
Neck diameter .538 in (Bad rounding hereScript error mm)
Shoulder diameter .560 in (Bad rounding hereScript error mm)
Base diameter .641 in (Bad rounding hereScript error mm)
Rim diameter .726 in (Bad rounding hereScript error mm)
Case length 2.81 in (Bad rounding hereScript error mm)
Overall length 3.40 in (Bad rounding hereScript error mm)
Primer type .251 (6.38 mm) Berdan (Kynoch #31A)
Ballistic performance
Bullet weight/type Velocity Energy
340 gr (Bad rounding hereScript error g) (factory load, black powder)1,925 ft/s (Bad rounding hereScript error m/s)2,800 ft·lbf (Bad rounding hereScript error J)
300 gr (Bad rounding hereScript error g) 1,870 ft/s (Bad rounding hereScript error m/s)2,340 ft·lbf (Bad rounding hereScript error J)
360 gr (Bad rounding hereScript error g) (smokeless, Lyman 509134)1,700 ft/s (Bad rounding hereScript error m/s)2,315 ft·lbf (Bad rounding hereScript error J)
Source(s): Barnes & Amber 1972

The .500 No. 2 Express (also called the .577/.500 and, in Germany, 12.7mm British No. 2) is a British centerfire fire rifle cartridge.

Designed as a black powder round in 1882 or 1883,[1] it resembles the .577/.500 Magnum Nitro Express, but uses a shorter case; the two are not interchangeable.[1] It was offered in single or double rifles, as well as a variety of Martini-based lever guns.[1]

In power, the .500 No. 2 is comparable to the contemporary .577/.500 Magnum and .50-110 Winchester, or the modern .30-'06.[2] It is sufficient for elk, deer, moose, or bear at medium range or in woods[3] and thin-skinned dangerous game, including lions and tigers,[1] but not thick-skinned animals such as elephant. It was popular in India with contemporary shooters, and tended to be offered in heavy rifles.[4]

The bullet is virtually the same as the .50 Sharps, and Lyman molds can be used to produce cast examples for reloading.[1] Factory loads used about between 130-160 gr (8.4-10.4 g) of Fg.

Moderately popular in its day, the round has long since ceased to be offered commercially. Black powder rifles in this caliber should use somewhat light smokeless loads.[3]

See alsoEdit


  1. 1.0 1.1 1.2 1.3 1.4 Barnes, p.230, ".500 No. 2 Express (.577/.500)".
  2. Barnes, p.230, ".500 No. 2 Express (.577/.500)", & p.39.
  3. 3.0 3.1 Barnes, p.230, ".577/.500 Magnum Nitro Express".
  4. Barnes, p.233, ".577 Nitro-Express".


  • Barnes, Frank C., ed. by John T. Amber. ".577/500 Magnum Nitro Express", in Cartridges of the World, pp. 230 & 236. Northfield, IL: DBI Books, 1972. ISBN 0-695-80326-3.
  • ______ and _____. ".30-06 Springfield", in Cartridges of the World, p. 39. Northfield, IL: DBI Books, 1972. ISBN 0-695-80326-3.
  • ______ and _____. ".500 No. 2 Express (.577/.500)", in Cartridges of the World, p. 230. Northfield, IL: DBI Books, 1972. ISBN 0-695-80326-3.

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