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Markings

Proof Stamps


Marking on right hand side plate. .303 2.222" / BNP 18.5 TONS PER O". Modern proof mark for .303-inch ammunition. From Birmingham Proof House. Pressure rated at 18 tonnes per square inch.

Marking on right hand side plate. DA / 91. Deactivated at London Proof House in 1991.

Marking on water jacket. DA / 86. Deactivated at Birmingham Proof House in 1986.

Sources

  • Goldsmith, 1994
  • Skennerton, 1988; 1997
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