I have a high level of respect for you, and I do believe that you're saying what you feel is true.
However, I'm only the designer of the OCW system, engineer Chris Long (formerly of Boeing aircraft) is the one who gave the "why" as to why the OCW system works.
What we needed to understand was why a single match load recipe (the which you've shot tens of thousands of over the years, I realize
) could work so well in so many different rifles. There had to be something other than mere barrel harmonics at work here, since load recipes exist that seem to defy them.
And you of course know that there are many standard "go to" highpower recipes that thousands of shooters over the years have used in thousands of different rifles--and they shoot well.
The shock wave is a real factor on barrel behavior. In fact, it's the shock wave that initiates the vibrations... causing the muzzle to trace a repeatable pattern as the bullet is moving down the barrel. And that wave cycles back and forth from chamber to muzzle at the speed of sound in steel (about 18K fps).
In truth, the OCW simply is an improvement of what folks have attempted for years to glean from a "ladder test." Sometimes ladder tests work--and sometimes they don't (as we're seeing here). But a properly shot and interpreted OCW test will work every time it's tried.
I appreciate your having read my OCW pages, and even if you don't agree with me as to the "why" I hope you'll concur that this method has worked very well for over a dozen years, and literally thousands of handloaders use it now. If you google simply my first name (Dan) and "OCW", you'll see what I'm talking about. Not trying to boast... just wanting to point out that a faulty or nonsensical method for doing anything will wither on the vine if in reality it does not work.
Find me a guy who says OCW doesn't work... and I'll show you close to 100 folks who will strongly disagree with him.
But Bart... I'm still a fan of yours. I like these pages, where you have contributed much over the years--and much of what you say in this link is well worth folks taking the time to read... here's the link--> Guns