The meaning of "30-0" depends on the context:
- In sports scoring (especially tennis), "30-0" means a score where one player has 30 points and the other has zero, often read as "thirty-love" in tennis.
- In chess or timed games, "30-0" could mean a time control format where each player has 30 minutes with zero increment per move.
- If asking about "30-0" related to a rifle or ammunition, it does not directly correspond to a standard cartridge. The closest known firearms caliber is ".30-06", which is a rifle cartridge with effective ranges around 300 to 500 yards for hunting or target shooting.
Please clarify the context for a more specific answer.
