heavier oil balls do not tend to have alot of backend because they use up too much energy in the front part of the lane... if there are clean backends then a weaker ball will actually give you a bigger backend..
I have heard the hammer burn has a crazy backend.
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16-17 mph,350 rpm,PAP 5 1/2 x 3/8up, HighGame 300 x 4, High Series 808
Book Average 205,PBA Xperience ave180