Of the last 6 animals I've taken over the past two seasons with a 9.3 carbine(5 caribou 1 moose), three of the shots were longer shots than my typical. I'm primarily a heavy woods and rivers hunter. But the last two seasons of hunting by dog team or canoe, it's been in very windy, open territory:
385 yds, Caribou, CZ open sights, 286 grain PRVI handload

400 yds, Caribou, 1.5-5 Leupold, 300 grain A-Frame handload

500 yds, Bull Moose, 1.5-5 Leupold 300 grain A-Frame handload

I don't get all hopped up on theoretical thinking out loud, ballistic coefficient, velocity, and bulky magnification.

Basic carbine rifle designed for big game or dangerous game. Open sights. Basic scope designed for the majority of situations, in QR rings for the close in situations. Scratches, rust, dents, missing blueing. Food cache always full, no grizzly bites in the rifle, or my flesh.