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i'm just playing the devil's advocate here, but i can blow a .2g bb to about 200 fps down a stock tm m4 barrel. the maximum pressure my cheeks can hold is 2.10 psi. a quick burst from my mouth is much less than this about 1 psi. the volume of my burts is at best probably no more than 3, but probably 2 aeg full cylinder volumes. to reach 400 fps, my kinetic energy would need to be 4 times what 1 psi could create. there is alot of probablies here and no hard measurements, but you understand my line of reasoning here. i'm very certain that an aeg piston produces pressure orders of magnitude above 4 psi, far in excess of the volume difference between my mouth and an aeg cylinder. don't get me wrong, i'm not trying to poke holes in your reasoning or math, but something just doesn't sit right with me. if i provoke you to re-think something, which leads to another thought or idea on something, don't we all win?
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