I haven't heard of the COR being a legal matter for bowling balls? Anyway, a Blue Hammer REALLY hits hard - even though with low margin for error.
AFAIK, the COR, of a ball's efficiency to transfer its impact energy, is defined by the object's density and its "resounding" to the impact. When I remember correctly, some manufacturers marketed their balls in the late 90ies for super-dense cores (Brunswick with Bismuth core elements in soem Zones, CeramiCore from Columbia(
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)) and their "impact potential". Not sure what became of it. And the Blue Hammer, with its ultra hard and massive urtahne shell plus a dense inner core is surely an object that can do good damage!
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DizzyFugu - Reporting from Germany
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