On Sun, 16 Nov 2014 07:40:31 -0500, Harrold wrote:

On 11/15/2014 10:42 PM, Roger wrote:
No one I know has ever said "Bang on" nor have I read it here in the
posts I do read.

That phrase is in the Queen's English urban dictionary.

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It is very British, no question about that. Americans would typically
say something like "spot on" or "right on the money" or "dead nuts
on".