I think the double rifle is an obsolete myth.
You can see how long it takes to reload when the 2nd shot is out.
+1 +1 +1 +1Reloading a double quickly is easily achievable, but requires correct technique and mind set. Ejectors help but aren't absolutely necessary. In short, after firing the rifle is broken and tilted with a flick dumping the cases. Two fresh cartridges are withdrawn from your carrier and inserted in the chambers. Rifle closed and ready to go. (Mind set relates to being alert and always loaded and ready. Reloading immediately after firing should be automatic whether needed or not!!!) A double is not for someone who only shoots once or twice a year.
On the reloads: it seemed to me that the hunters were more concerned with getting their brass clean in their pockets, than with getting the rifles ready to shoot.
Actually, if I am not mistaken, the second quick shot came from the hunter (PH) on the leftBut the quick shots were good,like a shotgun hunt.