He was present at Chuharkana on 30 December 1920 when Gurdwara Sachcha Sauda was taken over from Udasi mahants and brought under the management of the reformist Akalis by Khalsa Diwan Khara Sauda Bar under the leadership of Jathedar Kartar Singh Jhabbar. Bur Singh took the Khalsa pahul on the spot and became an Akali activist. He joined the jatha of Bhai Lachhman Singh Dharovali and attained martyrdom at Nankana Sahib on 20 February 1921, which happened to be his 26th birthday. See NANKANA SAHIB MASSACRE
References :
1. Shamsher, Gurbakhsh Singh, Shahidi Jivan. Nankana Sahib, 1938