I would think this to be a no contest issue. The double rifle never leaves it's position. The hands, face and eyes remain exactly where they were pointed and fire for a second time almost exactly like the first time.
I recently went on my first hunt with my double rifle. Though it's a small caliber it aimed well. Two one shot kills out to 140 yards and when my friend's boar was on the run after being shot by him 2 times I fired both barrels at a fleeing boar and connected both times.
I love my double and probably will be selling some bolt actions to buy more doubles.