I'd say heavier BBs inflict more pain.
Reason being that heavier BB tend to be more dense than lighter BBs assuming both BB are composed of the same material, the latter being less packed, microscopic pockets of air should absorb more energy than a heavier BB with a higher density. Less pockets of air will give you a better transfer of energy without energy being absorbed by the material itself.
Movies would be so much more interesting if we didn't take physics.
Last edited by Qlong; November 4th, 2008 at 00:28..