How many clays can you shoot in an hour? Guaranteed it's not this much.
CZ-USA pro shooter, Dave Miller, broke 3,653 clays in one hour (that's 3,600 seconds) to set a new Guinness World Record for "most sporting clays targets broken in one hour" and to raise money for Pheasants Forever's youth programs. He used 30 CZ 712 shotguns holding 12 rounds each and a team of folks reloading them to achieve this rate of more than one clay broken per second.
Dave was also shooting from the hip to survive that repetitive recoil. Here's video of him shooting towards the record.
There's a brief CZ-USA press release here.