Quote:
Originally Posted by KrisH
At that range you have to account for...
THE FUCKING PLANET SPINNING UNDERNEATH THE BULLET! 
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Er, no you don't.
The earth is a closed system, that is to say, the planet, its atmosphere, etc, rotates at the same velocity [~1600KM/h]
A bullet, no matter how far it travels, is still subject to the same parabolic arc as any other propelled object.
Ask yourself: When you drop a pen, does it land 5cm away from where you dropped it?
More information:
http://curious.astro.cornell.edu/que...php?number=546