Thanks so much for this thoughtful response.
I can tell you that for the last 5 or 6 months I have been going through a very similar process as it sounds like you went through in terms of Form's "data" and my own beliefs.
My first reaction upon listening to Form's first podcast with the Exo Mtn Gear guys was to call B.S. and be defensive.
I've written this before, but if what Form stated in that podcast about the "toughness" of penetrating a large bull elk or Alaska moose is correct, it literally wipes out 70 years of commonly held "best practices" for hunting rifle cartridge and bullet selection; and essentially makes hundreds of Guides, PHs and hunting journalists flat-out-wrong. Frankly, that still makes me skeptical. Hence the question regarding African dangerous game and Grizzly defense guns. Could all of us have gotten things so wrong as to be sending African PHs into the bush with the wrong bullet in the wrong caliber rifle?
I even shot off a shitty email to Mark basically accusing him of joining a cult. (little did I know about the cult of Rokslide!) But I had grown to appreciate Mark and Steve's podcast because of their scientific and level headed approach to all things hunting..... and after listening through the podcasts a second time I stopped a .308 Win. build I was in the middle of and ordered a 6.5 CM proof barrel instead.
While I will remain a healthy skeptic, Form and his minions have profoundly changed my approach to becoming a better, more humane and more successful hunter. And for that I am really, really grateful.
Sounds like I'm not the only one on this kind of journey.
Regarding the info Form provides, I'd have to summarize my current default position is that what he says is true and should just be trusted, unless something specific is demonstrably proven otherwise, with evidence. It didn't start that way.
But as I learned more, and more of my own experiences started matching up with what I began understanding him to say...I just started defaulting to him being an instructor, with vastly more experience successfully killing big game and long-range field-reality precision rifle shooting than me, and all but the rarest hunters. He's human, nobody's perfect, he's made mistakes, but he's also a trove of info - with the courage to speak truths while being vilified by some. We're just not likely in this era to ever find a higher volume of real-world data on the results of shooting small-caliber on North American big game, including number of shots per kill, distances, and time for the animal to go down. All that gets magnified even more by his experiences as a shooting instructor, and seeing what happens to a person's shooting accuracy in simply switching from smaller or larger cartridges.
I'm definitely not saying this as a fanboy - I'm saying this as someone who has been the expert on a couple of things in my own life, and who has had the privilege to instruct on those issues.
There are always partially-experienced but righteously vehement people who just don't know how ignorant they are, arguing against your superior expertise, experience, and cumulative wisdom. The more I discovered Form wasn't just some internet rando, but had a substantial background on the claims he was making, the more I realized he seemed to be in this position himself, on what he shared here.
People with no background, cultural biases, or preconceived ideas are the easiest to teach - it's the people with just enough experience to be immersed in the Dunning-Kruger effect that are the problem.
There's a learning curve, where the people with the least experience, and the people with the absolute most experience, are the easiest to teach. It's the people in the middle that can be such an absolute pain in the ass.
Form would have zero problem teaching his experiences and wisdom to new shooters and new hunters, and would get them up to speed far quicker than he could your average hunter. And he would likely have a similarly easy time teaching his stuff to former Delta or CIA Ground Branch people - who are used to trying on new ideas, even if they go against their current preferences or understandings. They're
comfortable with that, as professional students, and seek it out. It's the people who think they know more than they actually do that are the problem. Especially when those people's dispositions blind them to negative-evidence of their beliefs. I've experienced this over and over when instructing, until those middle people experience enough pain for the realization of their mistakes to crack through their mentality. And I've been on the wrong side of it myself once or twice as a kid, too.
The dude goes through a tremendous amount of crap here, sharing his knowledge and experience, when other people of similar expertise would have bailed on it a long, long time ago.
EDIT: In case clarification is needed, the Dunning-Kruger stuff wasn't directed at you. It's clear you're uncommonly good at learning and following truths.