Macgyver, you do realize that you're making M_a_x's point?

Obviously you're not talking about relativistic speeds - the speed of the outer surface of a 1" ball bearing at 27,000 RPM is only about 80 MPH.

If spinning a body somehow increases it's gravitation without increasing it's mass or vice versa, the same ought to apply to any moving body. Bullets ought to positively dive for the ground!