I believe it was Oscar Wilde who said, "Nothing succeeds like excess."
(Oscar was generally considered to be an elegant.)
15,000 shots in four days is 3,750 shots a day. If we allow 4 hours to eat, sleep, relieve oneself, and brag, that leaves 1200 minutes to shoot those rounds (or 3.125 shots per minute for 20 hours each day for four days, better than a shot every 20 seconds). And . . . he also shot three elegants in his pajamas.
A shot every twenty seconds is slow shooting in Cordoba. And there is no way to shoot 20 hours a day, not enough daylight. I averaged one shell every fourteen seconds of shooting time my last trip, with a 20 gauge Beretta 687 SP II Sporting. I had to force myself to shoot slow just to get the time between shots down to that.
I would not want to shoot that much. I have found that 700-800 shells per three hour shoot is a good pace for me. No recoil problems from that number, and at the end of the three hour shoot I've had enough. Besides, it's about all the extra shells I can stand to pay for.
My averages run usually around 70% for the four days.
jOe, rats and cockroaches are God's creatures, too.
Stan
