I don’t have a dog in this fight, I mean discussion...But, I do have 6 one shot bang flops between 725 and 847 yards on elk with my Sendero 300 RUM....No flinch. No trigger jerk...Just nice solid holds across the top of my hunting pack.
I would assume a shooter with solid skills BTS would be successful in producing a one shot kill with 1625-1800 FPS with penetrating and expanding bullets. 180gr NAB’s work fantastic in my RUM...I can’t judge abilities via my keyboard...
But, I would know it in a heartbeat, in the field, if a guy was capable of making an 800 yard, one shot stop, just by how he was going about setting up for the shot, using calibers being discussed... 😎
Honestly,I wouldn't even think of an 800 yard shot right now. In my OP I said I may never shoot an animal that far. I do want to put together a fairly light weight hunting rifle capable of killing that far so I can start practicing at longer ranges. I'll never shoot at an animal that far until I am confident that I can make the shot,because I have made the shot a lot in practice.