ShunZu
member
.300WM looks like the best 1000yd choice on paper, but again, can I make the recoil manageable with a heavier barrel? Also ammo seems expensive for coming up to speed at 1000yds.
If you're talking 1K yards, the .300WM is -the- choice, imho. And like it was said above, weight is your friend. My Sendero weighs a ton but is VERY good on a bench. I just wouldn't want to lug it up and down Colorado mountains on an elk hunt.
And if you reload, it's a whole lot cheaper to shoot. I can shoot my .300 with match-grade top-shelf ammo (IMR4350, Sierra Matchkings, Winchester Mag rifle primers, new winchester brass) for as much per round as you can buy surplus .30/06.
Serious range requires serious rifles, optics and ammo. And MUCH practice.