.50 British

.50 British is a rifle cartridge or ammunition model.

Also recorded as 12.7x81mm; .50 Vickers; 12.7mm×81mm SR; 12.7 × 81 mm SR; .5 Vickers; Vickers M1924.

Overview

.50-inch semi rimmed cartridge.

In detail

It is associated with British Empire. The record gives 1921 as its date of establishment or first appearance.

Sources

Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.

reference work · Reputable secondary · Wikipedia
“12.7×81mmSR”, English Wikipedia, consulted as further reading
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reference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q3597229: .50 British
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