Hey wow... I did the same thing when I was in the Royal canadian Sea Cadets but without the obstacles. It was the reward to be accepted on the Drill Instructor course. We had the same gun... a 12 pounder. I wonder where this gun is now!
Thanks for sharing the video, it brings back some good memories. I do not know if the cadets are still allowed to use the gun. They remove all the .303, the FN and even the .22 rifles. A firearm is so dangerous after all!!! (sigh... rolling eyes... discouraged!)
Martin