Your highly trained officer comment is quite funny, hilarious even, as the majority that I've seen and shot with/against aren't!
Most shooters, the regular people, not LEOs, will put more rounds downrange in one month then the majority of police officers put down in a year, Hell, ten years, unless, they too, enjoy the shooting sports but that's on their own not from the department...The vast majority, only shoot for their mandatory qualifying round and that's it...
Also applies to the military as well as it's what a 1:20 ratio for support to actual shooters and what percentage of those shooters, with the exception of Special Forces, train more then a few times a year with live ammo...
You want to see nice shotgun work besides the 3 gun events, go to any SASS cowboy action shoot and watch more aimed rounds from a double barrel coach gun go down range then you can with a stock 870/500/590...Not me as I've only participated in a few--still learning!