Grew up shooting deer 50yds out of a stand in MN woods, ground squirrels with 22lr at 100yds and coyotes with old Marlin lever action 30-30 at 175yds in western ND. Just started western big game 3-4 years ago and after a summer of intentional practice initially set 300yd as our max. We have since practiced enough and built comfort out to 425yd (my son took a pronghorn at about 415 last year). We shoot paper out to 1000yd so evelvation is a no brainer. With range finders, dial turrets, BCD reticles, high BC bullets, chronos to confirm velocity, proper bullet construction, etc. 100yds isn't much different than 500yds except for two things - and they are BIG things.
First and foremost is wind. I don't trust the wind and I don't trust my reading of the wind in a wild setting enough to consider more than about 400yds at an animal. And as the wind goes up or becomes more variable, I shorten my max range. There have been days in WY, that unless I was directly downwind I wouldn't have trusted a 200yd shot.
The second is shooting position. We practice our max 1-2 MOA range prone with bipod, kneeling with sticks, kneeling off hand, standing with stick and standing off hand. My accuracy standing offhand is much less than prone, so we set our max range in the field according to how we are going to set up the shot.
Finally, I view the ethics of the shot as a question of humane killing and not so much any sense of "tradition" or "shooting vs hunting". There is no doubt there are guys that can kill an animal at 600yds just as reliably as I can at 400yds. I have no problem that their max is 50% more than mine. But what I HATE are guys that don't do the work practicing in various conditions and don't account for extra room for error in field settings who still insist on taking long pot shots. I know guys that don't shoot all year, and will go out right before the season confirm zero, take a few extra shots at 200yds, are loosely on target in the 2 MOA area and declare themselve ready to take animals at 500yds because they now have a turret that will dial the distance and the box ammo has a BC and velocity printed on it they can plug into an iPhone app for drop. This is unethical in my eyes - these folks are just asking to wound and lose an animal. It can happen to any of us, but these folks are working to make it fairly likely.