I got to shoot this "Irish Star" today. I was surprised that it wasn't 'quite ' as bad as it looked in the video. It takes 8 hits to clean it.
I got to watch the match winner in open class shoot it 'before' I did--he cleaned it. If you shoot one of the discs off each end quickly, it only starts to move slowly. Then 'try' to shoot one off the end that's falling to stop the rack from rotating. Well I got that far until it went bananas. When it tilts enough, a heavy weight falls of one end; and it really gains speed fast
At that point, if you shoot the discs off the one that's at the top, the bottom ones will stay at the bottom and can be shot easier than when they are all spinning AND rotating with the rack.
The worst I saw was 3 full mags and then quit with two discs left due to needing ammo for the rest of the stage. The fastest shooter, shot it last.
I got lucky and cleaned it with one production mag with ALL 11 shots and at slide lock.

It was actually one of my better stages. I had two spare mags I didn't have to use in back pockets for 6 total. Proves luck matters.

If you get a chance to shoot this 8-disc Irish Plate Rack