be going great guns

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be going great guns

To do something enthusiastically and successfully. Primarily heard in UK, Australia. He was hesitant at first, but now that he's been on the job for a month, he's going great guns.
See also: going, great, gun

be going great guns

INFORMAL
If someone or something is going great guns, they are doing something very well and succeeding. I was going great guns for the first 18 miles or so of the race. Business is going great guns.
See also: going, great, gun