No doubt and would be. I'd be using a .223 for the practice part. From the apparent distances a .22lR may work also.
Given the target (bear, hogs and moose by what I saw) and the pace of the shooting a .22 would give you good swing and site picture practice but I think for learning to run the bolt like that I'd want whatever my hunting rifle would be.
I would be upset at likely losing that brass though!
