What does .338 mean?

.338 in Community Dictionary

A sniping cartridge, developed in Finland because of the organization Lapua as well as the Brit organization Accuracy Global in 1989 for extreme sniping ( ~ 1,000m range ). It could penetrate human anatomy armor at a selection of 1,000m , making it the cartridge of preference for sniping and anti-personnel objective by ErnestReport definition
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