I was just wondering since my other passion is paintball... I know that with paintball, running Co2 means having a harder time keeping the guns velocity up in cold weather and also being careful to not kill yourself with exploding co2 bottles when tempertures are up (not really that extreme but you still gotta be careful)... But that is not the case if you are running compressed air... Compressed air is alo more stable when it comes to enviornmental temperatures... at least thats how it is in paintball...
-jason-