James played his club rugby for West of Scotland FC. He was capped once for in 1872. His twin brother, George Buchanan McClure, was also capped for Scotland in the next year, making them the first twins to be capped in international rugby – the only other twins to be capped for Scotland are Finlay and Jim [Calder (rugby union)|Jim Calder].
Personal life
James married Ellen Mary Collier on 29 October 1884. They had five children: Grace Buchanan ; George Buchanan ; Ellen May ; William Francis Campbell ; and James Howe. James died in 1909, outliving his twin by 21 years.