Higher amount of shot needed

[javajazzi8888.1]

Need Info for my Classic Mag,
I use Co2 ( prefer them due to lower price compare to Nitro) Would a regulator be good with it? Is there any way i can get more than 400 shots out of a 20 oz Co2 tank.Would a large Expansion Chamber give me more shots? I use a remote coil.Should I get an expansion chamber? If any one can help me answer these I would much appreciate it.:confused:

[Dayspring]

Only a bigger tank will give you more shots. But with a tank that large, I think you have a leak somewhere.

Here's what you do, gas the gun up and dunk it in water. See if there are any air bubbles. You should get alot more than 400 shots out of a FULL 20oz.