Mixing Propane and CO2?

[bobbunny]

Would it be possible and practical to mix some propane and CO2 (With one of them fancy CO2 chargers) in a gas can (Can that stores gas that can be refilled via bottom) for a propellant that either shoots harder or works better in the winter?

[Mles]

Simply, no. A lot of GBB's will function DECENT in the winter, you just need to do your research.