The 15-lb specs on the Ball Reviews ball page differ from what is on the Columbia site.
On the Ball Reviews page, the RG is listed as 2.48 with a .047 differential.
On the Columbia site, the RG is lised as 2.47 with a .054 differential.
I sent an email to the Ball Reviews Help page and also sent a message to a Columbia rep but haven't heard any response in a week.
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