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If you shoot an animal with a 150 grain bullet traveling at 3000 FPS and the bullet exits the animal at 2000 FPS, is that more energy transfered than the same bullet traveling at 1000 FPS that stops in the animal?May be a physics equation for this,but I don't know what it is.
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Are you assuming the entire 150 grains exited? That's not likely to happen in the real world with modern hunting bullets.
The stretch cavity would also be much different in your second example.
Below is a link to an explanation of how speed and mass work. You could also google "corded bat" and get a practical example.
http://en.wikipedia.org/wiki/Mass