I put the article in the same tone as the one preceding it that proclaimed the finest bullet in the world, ready to take over all handgunning and rifle hunting was a dead soft wadcutter with two round balls swadged to it. "Things ain't always what they seem are they gunny". With modern rangefinders and accurate rifles longer ranges are available. I also remember Col. Askins writing opposing views on the same subject as gospel when he wrote whatever the editors wanted.
For me 350 yards + is a long shot. I am not a fan of shooting beyond your practice range. It is easy to carry a rangefinder today and guess a distance as you are out for a walk and then range it to check your accuracy. Like most things a lack of practice does not build skills, nor does reading about it. I have acquaintances whose only way to hunt the area around them and get elk is with a 338/378 Weatherby and 600 yard shots. They get Elk every year and it must work for them but that is not the way I prefer to hunt.