CO2 Vs. N2

What is the difference between C02 and N2?  One very important difference is the lack for the need of an expansion chamber on your paintball gun or CO2 bottle.  The Co2 deals more with the Ideal gas law from physics.  When you shoot fast the pressure of the tank drops rapidly, and the temperature continues to drop to the point that the only thing going to the expansion chamber is liquid CO2. This causes the expansion chamber to fill up with liquid CO2 and also make the paintballs shoot faster than normal.  In some paintball guns this could cause lockup or even damage.  These are some pitfalls of using an expansion chamber; but if you use N2 instead, you won't need the expansion chamber and won't have to worry about these problems.