Couple of recent videos on YouTube in the Forgotten Weapons series on the Hotchkiss gun:
Description, history and field strip
https://www.youtube.com/watch?v=i6Oaif8oWzw
Firing the gun
https://www.youtube.com/watch?v=e3hJvmxV_iw
I can see why the British went with the Hotchkiss in tanks (eventually) - the gun seems to be unbreakable.
Regards,
Charlie