| 摘要 |
A projectile ( 10 ) comprises a cylindrical body ( 12 ) with a first (leading) end ( 14 ) and a second trailing axially opposed end ( 16 ). An internal cavity ( 18 ) is formed between the ends ( 14 and 16 ) and holds a volume of propellant material ( 22 ). The first end ( 14 ) is closed by a nose ( 20 ) that is fixed to the body ( 12 ). The end ( 14 ) is sealed with a base seal ( 26 ) that seats a primer ( 24 ) for igniting the propellant ( 22 ). The primer ( 24 ) is located inboard of the second end ( 16 ) and the base seal ( 26 ) to reduce the likelihood of accidental activation. Seals ( 30 ) are formed about the body ( 12 ) for maintaining gas pressure of deflagrating propellant. The seals ( 30 ) may be formed integrally with the body ( 12 ) or separately from the body ( 12 ) and seated in respective grooves ( 40 ) formed circumferentially about the body ( 12 ). Also disclosed is a breech sleeve ( 810 ) shaped to complement the breech of the weapon and a throughway ( 816 ) defined by an internal surface, the projectile being able to pass through the throughway ( 816 ).
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