This is a simple question that gets asked a lot in the airgun community. Although the question is simple, the answer is unfortunately not. There are too many circumstances included in getting an accurate answer to how many shots you can get from a CO2 cartridge. A single 12-gram CO2 cartridge can produce anywhere from 30 - 200 shots dependent on temperature, valve settings, rate of fire, and blowback. Let's see how each of these factors affects how many shots you're getting.