You mention both mass and volume, which are you talking about as both are different?
it a know fact that a lighter bat thrown quicker has a greater force potential than a heavier bat thrown at the same pressure but slower due to weight.
no on a drop test only the heavier bat slows it's motion on the up and down swing if the same muscle strength was used.
an engineer in the making.... sorry mate Mass
i would like to understand more about tom's (goose) and the science behind his bat's