Was a linstock the proper way to ignite that gun?
No definitely not "correct", however copper friction tubes are not available here and, even if they were, with the crowd on an embankment behind the camera I doubt that modern safety rules would accomodate the remote possibility of a flying tube injurying a spectator. We use home made paper quills about 3 inches long, hollow and coated internaly with powder - these have never failed to go of instantly.
Adrian