Surprisingly, I've never set my 2x7's or 3x9 scopes higher than 4x when hunting. Pretty much stay at 4x I'd say. BUT, I won't shoot farther than 200yd.
In the mountains, most shots over 200yd would take 1/2 a day to get to where the animal is/was. I can't remember having a windless day in the Rockies, and even using my Wind Wizard It's still tricky.
Moose hunting in Canada, again 200 yd would be a pretty good poke. My bull ranged out to 180 something yards but most shots are less. Our native guide carried a 30/30 with iron sights. Told us it was plenty of gun," just get close and hit them in the chest" as he put it.
I always have my 8x compact Steiner or 10x Leupold binoculars around my neck. I find them invaluable.
And by the way, I own a pair of old eyes also.