How many shots can you get from a CO2 cartridge in a air soft gun?

When using CO2 there is no set number of shots due to the spiratic nature when releasing the CO2 from the tank. CO2 is unreliable in the fact that the psi of the shots are not consistent and tend to waver and vary depending on temperature. However estimates can be made from the size and past records.

12g- 30-35

9oz- 300-500

12oz- 700-900

20 oz- 800-1000

24 oz. 1000-1100