I'm going to depart from the general range of opinion here. As long as we're talking high end optics, more is better. That said, of the dozens of wild game that ended up in my freezer, most were taken with 60's vintage B&L 2 1/2 - 8 or Redfield 3 - 9x. My old man weapons now sport Huskemaw 5-20's, NightForce 5-20's & 5.5-22's, or Bushnell Elite Series with upper magnification between 20x-30x. Recently shot a friends's NightForce ATACR 7-35 using 35x on a 6mm Creedmoor on targets out to 800 yards. Amazing!! Hunting in the timber..... use as low a power as available.... when I was a young able body brush hunter, my scope was always carried on 2 1/2x or 3x. Shooting long range, one usually has time, you have to have time to use a rangefinder and windmeter. Field of View usually isn't critical because you've spotted the game and they're typically meandering rather than running. My second focal plane scopes generally have to be shot using 20x for the reticle gradations to be valid and 20x has been adequate out to 1400 yards. Can't wait to put the 7-35 ATACR or IOR on my new 6.5-06 AI. It's going to be great!!