Now your into a complex and controversial subject that involves the USBC rules on static weights and modern balls.
Only thing for sure is that the CG matters in terms of keeping a bowling ball within the USBC guidelines for static weights after drilling.
There are two sides. "CG Matters" View and the "CG NOMADDAH" View
You can read more here.
http://www.brunsnick.com/role_of_cg.html
and here
http://wiki.bowlingchat.net/wiki/ind...ter_of_Gravity
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