There is a question that I have been wondering for a while, and that is, What is the compression ratio of air at 100 psi VS air at just normal atmospheric pressure? as in, one liter of 100 psi is the equivalent of how many liters of uncompressed air?

This is all I need to know to measure how much wasted air is being blown out the barrel of my many inefficient airguns, and any help would be appreciated

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