. . "Your sucking has no affect on the soda, just like the piston has no affect on the bbs.html'>bb in the barrel (if it???s even still IN the barrel).Now, with all of that being said, there is a problem which occurs with improper cylinder sizing which will affect FPS, Accuracy, Consistency, and Performance.This problem occurs when your cylinder does not physically have enough air volume to fully prope" . .