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.222 Rimmed
Type Rifle
Place of origin Australia
Production history
Designed 1960s
Specifications
Case type Rimmed, bottleneck
Bullet diameter .224 in (Bad rounding hereScript error mm)
Neck diameter .265 in (Bad rounding hereScript error mm)
Shoulder diameter .360 in (Bad rounding hereScript error mm)
Base diameter .375 in (Bad rounding hereScript error mm)
Rim diameter .450 in (Bad rounding hereScript error mm)
Case length 1.85 in (Bad rounding hereScript error mm)
Overall length 2.130 in (Bad rounding hereScript error mm)
Rifling twist 1-12"
Primer type Small rifle

[1]

Ballistic performance
Bullet weight/type Velocity Energy
45 gr (Bad rounding hereScript error g) HP3,450 ft/s (Bad rounding hereScript error m/s)1,185 ft·lbf (Bad rounding hereScript error J)
50 gr (Bad rounding hereScript error g) SP3,162 ft/s (Bad rounding hereScript error m/s)1,110 ft·lbf (Bad rounding hereScript error J)
55 gr (Bad rounding hereScript error g) SP3,070 ft/s (Bad rounding hereScript error m/s)1,148 ft·lbf (Bad rounding hereScript error J)
70 gr (Bad rounding hereScript error g) SP2,880 ft/s (Bad rounding hereScript error m/s)1,288 ft·lbf (Bad rounding hereScript error J)
Test barrel length: 24"
Source(s): Reload Bench [2]

The .222 Rimmed is a centrefire rifle cartridge, originating in Australia in the 1960s as a cartridge for single shot rifles, particularly the Martini Cadet action.[3] Performance is similar to the .222 Remington on which it is based however loads should be reduced as the walls of the brass cases are generally thicker.[4]

Cases and loaded rounds were originally produced by the Super Cartridge Company.[5] Brass is now available from the Bertram Bullet Company[6] or can be made from 5.6x50mmR RWS cases.[4]

The .222 Rimmed has also been used as a parent case for wildcats, similar to ones based on the .222 Remington, such as rimmed versions of the .17 Mach IV, the .17-222, and the .20 VarTarg.[7]

See alsoEdit

ReferencesEdit

  1. Donnelly, John J., Handloaders Manual of Cartridge Conversions, p151
  2. 222 Rimmed
  3. Reload Bench
  4. 4.0 4.1 Barnes, Frank C., Cartridges of the World, 7th Edition, p158
  5. Barnes, Frank C., Cartridges of the World, 10th Edition, p473
  6. Grafs
  7. Saubier


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