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(
)) 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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