.303" Armour Piercing ammunition:
- Cartridge SA ball .303 inch mk VII.S
This was the first approved armour piercing cartridge, introduced in 1915. The bullet had the same shape as the ball mk VII, (pointed) with a cupro nickel envelope. The core had a steel tip and a lead / antimony rear portion. The headstamp includes the mark numeral VII and the codeletter "S".
- Cartridge SA ball .303 inch mk VII.P
The ball mk VII.P has a bullet with a cupro nickel envelope. It has a steel core enclosed in a lead sleeve. The headstamp includes de code letter "P" (VII.P)
- Cartridge SA ball .303 inch mk VII.P.z
Same cartridge as above, but with a Nitro cellulose propellant. The headstamp included VII P z.
- Cartridge SA ball .303 inch mk VII.F
The bullet of the ball mk VII.F has an envelope made of copper, and a lead core. The headstamp included VII.F. Later cases (from ± 1920) had a green primer annulus.
- Cartridge SA ball .303 inch mk VII.F.z
Same cartridge as above, but with a Nitro cellulose propellant. The headstamp included VII F z.
- Cartridge SA ball .303 inch mk VII.W
The ball mk VII.W bullet has a cupro nickel clad steel or gilding metal clad steel envelope. the steel core was enclosed in a lead sleeve. The mark numeral and code letter VII W was included in the headstamp.
- Cartridge SA ball .303 inch mk VII.W.z
Same cartridge as above, but with a nitrocellulose propellant. (instead of Cordite) The headstamp includes the code VII W z.
- Cartridge SA armour piercing .303 inch W mk I
In 1927 the name was changed in W mk I, without changing the design of the bullet.
- Cartridge SA armour piercing .303 inch W mk I.z
Same cartridge as above, but with a nitrocellulose propellant. (instead of Cordite) The headstamp includes the code W I z.