Headstamps and Colour Coding
| Headstamp ID | Primer Annulus Color | Bullet Tip Color | Other Features | Functional Type |
|---|---|---|---|---|
| VII or VIIZ | Purple | None | None | Light Ball |
| VIIIZ | Purple | None | None | Heavy Ball |
| G1, G2, G3, G7 or G8 | Red | None | None | Tracer |
| G4, G4Z, G6 or G6Z | Red | White | None | Tracer |
| G5 or G5Z | Red | Gray | None | Tracer |
| W1 or W1Z | Green | None | None | AP |
| B4 or B4Z | Blue | None | Step in bullet jacket | Incindiary |
| B6 or B6Z | Blue | None | None | Incindiary |
| B7 or B7Z | Blue | Blue | None | Incindiary |
| O.1 | Black | Black | None | Observing |
| PG1 or PG1Z | Red | None | Blue band on case base | Practice-tracer |
| H1Z | None | None | Front half of case blackened | Grenade-Launching |
| H2 | None | None | Entire case blackened | Grenade-Launching |
| H4 | None | None | Case blackened 3/4" inch from each end | Grenade-Launching |
| H7Z | None | None | Rear Half of case blackened | Grenade-Launching (v.powerful load) |
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—Edmund Burke (1729–1797)