The guy operating the rifle in the reel, showing power factor calculation rounds being shot is Brad Bourner, a consumate rifle training provider and shot, his team mate is looking on, another great shot and brilliant wind caller.
For my efforts, I took the recently Ronin built 6.5PRC, I had it built intentionally exceptionally heavy @ 28+ pounds, not one to cart round as a choice for the hill, but it shoots just like a rail gun.
I had previously shot it in with the one shot & clean method, up at the farm & zeroed it at 100 yards.
So on the day I proved zero at Orion on clays, cleared them all out one by one, & proceeded to shoot into the 200 yard zone, all steel options engaged without any fuss, on again to steel lasered at 813 yards with first round hits using the reticle hold overs, next lot were measured to be 933 yards, again successfully struck first time using the reticle stadia, Lastly but for me not least, strikes on the plates out at 1,025 lasered yards, again on the scope stadia.
Ammunition was the Hornady factory 143 grain ELD-X, I cannot better their offering by home loading ..... So why bother.?
Wind at time of my efforts was estimated to be around 8 miles per hour from right to left with the typical gusts & eddies usual for this sort of landscape.
Good luck Will & hope you stay dry.