The .55 Boys (13.9×99mmB in metric) is an anti-tank cartridge used by the United Kingdom in World War II. It was designed for use with the Boys Anti-Tank Rifle.
The .55 Boys (13.9×99mmB in metric) is an anti-tank cartridge used by the United Kingdom in World War II. It was designed for use with the Boys Anti-Tank Rifle. (en)
El .55 Boys (13,9×99mmB en métrico) es un cartucho antitanque utilizado por el Reino Unido en la Segunda Guerra Mundial. Fue diseñado para usarse con el Fusil antitanque Boys. (es)
Le munizioni .55 Boys sono un tipo di cartuccia anticarro usata dal Regno Unito durante la seconda guerra mondiale per il fucile anticarro Boys. (it)