R.I.P. Scout26
Spoiler: it's a bullpup shotgun review/test with no load data or terminal performance against UAVs.I'd start with 1.5 oz of lead #2-BB @ 1300fps. That should be effective out to 50yds depending on the barrel. Patterning it could be brutal.
I don't know why they would need shotguns. Surely they can get hold of more $2 million missiles to take out the drones.