Green’s Dictionary of Slang

bolter’s chance n.

[SAusE bolter, a fugitive convict, an absconder]

(Aus.) an outside chance; thus not have a bolter’s chance, to have no chance at all.

[Aus]Ozwords Oct. 🌐 In the twentieth century the phrase a bolter’s chance appears, meaning ‘only a remote chance of succeeding; no chance at all’.