That's some cool stuff!
I have some older and crappier video where I was testing the Federal, Hornady, Winchester SuperX, and Winchester Ranger out to 25 yards. The Federal FliteControl was the only one I tried farther because I had the wad embedded in the target and it still had a pellet in itand the rest of the pattern could be covered by my fist. I shot all those with the 590A1 I used to have, it performed amazingly, measurably better than the 500 Persuader. But I don't have it anymore.
I suspect based on the videos you posted, there are more than a couple things that can/will interfere with the FliteControl. I never tested it in a flush mount choke tube like Benelli's modified, only through ported tubes. Compressing shot (too much constriction for the shot size) definitely causes issues like pellet deformation which ultimately means uneven flight due to flat spots and divots. I hadn't imagined this could be the case with non ported tubes that were at least the correct size but that FliteControl was definitely intended for cylinder bore guns. Additionally, ported tubes have always been a no go with FliteControl. The particular choke I was using is an exit diameter of .690 which isn't that constricted as far as 12 ga guns go. But more than a cylinder for sure.
Moral of the story;
Use FliteControl loads in cylinder bore guns. Use chokes for everything else. Except for steel shot. Throw that crap in the trash.