What is more powerfull compressed air pcp or cp in an air gun?

Of all the different power plants. Spring, Nitro, C02, and Pump. PCP is the most powerful. They may not be the fastest but they carry the hardest hitting pellet of all the airguns and rifles. PCP can be charged to 3000 PSI. A normal 12 gram C02 puts out around 800 PSI. The largest Pellet, any of the other air systems is capable of, is a 25 caliber pellet. ( and that is in very few models) PCP's can fire 9 MM, 45 Caliber and 50 Caliber pellets that out weigh any airgun pellet. These are also the most expensive and accurate airguns. PCP's are used in Olympic matches all over the world.

A large Caliber PCP can bring down a moose, No normal airgun can accomplish that.