It is not the same story. I was referring to the use of the Prism. I think the G&A guys were shooting around a mile. I will try to get more info.
Edit
Found it. It is season 17 episode 8. They shoot a .50BMG over 2miles. The clip only shows the lead in to the show, but you can see it on the rifle.
https://www.thesportsmanchannel.com/show/guns-ammo-tv/videos/82000/359360