Custer had one go on bear! (4,5)

I believe the answer is:

last stand

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'custer' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'one go on bear' is the wordplay.
'one go on' becomes 'last' (I've seen this in another clue).
'bear' becomes 'stand' (bear can mean to stand or endure).
'last'+'stand'='LAST STAND'

'had' acts as a link.

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I've seen this clue in The Times.

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