I've never heard of this Jim S. I have heard of Jack O'Conner, Howard Hill, Fred Bear, and a kzillion other folks who have had "great skill" at hunting and especially self-promotion. They both had the money and time to hunt nearly everywhere, and kill about everything.
The common element is that "nothing succeeds like success." Most of us can hit stuff with a ML. Most of us can tell the difference between a rock and a sheep, caribou, moose, yadda yadda, etcetera, et al, but you can't shoot what you can't get to.
We had an old guy in Kentucky who was supposed to be this great trapper. Some of invited him away from the private load on Western Kentucky's coal fields, and into the mountains of Eastern Kentucky. This guy gave lectures on catching foxes, 'coons, and what have you. He didn't catch squat. Turns out that on his exclusive properties he had an enormous amount of fur animals and he managed to catch some of it; of course the numbers seemed big to us in the mountains, but put in an area where fur was scarce he couldn't catch his own thumb in a trap.
It's like I tell my son, "Don't look at what the other man is doing with what he has, look at what you're doing with what you have. If you're doing all you can, you're 'Up to Green River'".