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APCBC

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Internal structure of British World War II naval 15-inch APCBC shell

]] [[|

Battleship shells 36cm, 40cm, 46cm; World War II

]] The armour-piercing capped ballistic cap (APCBC) is a type of armor-piercing shell introduced in the 1930s.

Wiktionary

apcbc

init. (context military English) http://en.wikipedia.org/wiki/armor-piercing%20shot%20and%20shell