I shot a 18 deer between 400 and 500 yards with a Leupold 2x7 scope with a Stoney Point elevation turret added.
I would range the deer while stalking using a Lecia 1600 rangefinder.
When I was within 500 yards, I would like down, deploy the bipod, and screw on the turret.
2x was plenty power for shooting a deer at 500 yards. I would just aim for the front 1/3 of the animal.
But in varmint hunting with a .223, to shoot a ground squirrel or prairie dog with just the head sticking out of the burrow at 200 yards, I like at least 10X.