frnkeore
Thought you were done with me......oh well, it had been peaceful in your absence. As usual you base arguments on misunderstandings. Suggest you re-read the parts in the beginnings of this test (Chapter I) where it is explained the accuracy degradation is not compared between barrels but each barrel is compared to itself. The "proportional accuracy" is then compared between barrels. In that comparison we are not looking for "best accuracy" or bench rest accuracy but are looking for that point at which accuracy begins to degrade as we increase velocity.
You are fan of picking out a few examples from CBA matches where the RPM Threshold has been pushed up a bit, just as I've continually said it could be. CBA matches are shot with accuracy in mind BTW and not to push a naked cast bullet of ternary alloy as fast as we can with accuracy (the object of these test....remember?). I suggest you go back to the CBA archives and research the match results going back several years. There you will find (I have researched them as others have) the greatest 99.99% of scores (the few winners and all the losers) are shot with cast bullets with in or well under the RPM threshold. How well does Mr. Bottiger's 7mm BR shoot that bullet at 2100 fps or 2200 fps? Probably not very well or he would be using that. His load is probably exceeding the RPM threshold right in the 2100 fps range which is exactly where many of us have pushed the RPM Threshold up to with 9 - 10" twists.
As goodsteel states; "all I got was that Larry is wrong because Larry is just wrong. No argument that RPM is the force that acts on imbalances (three separate critics admitted this to me over the phone). No evidence to the contrary. No logical reasoning. Nothing but emotionally charged accusations and random information."
Me thinks thou doest protest to much and you perhaps fall in that category. Why don't you prove me wrong by conducting your own tests and present the information/data here in a logical scientific manner instead of random selections from CBA matches of what other shooters do?
You observe; "Note that of the pictured barrels, used in Larry's tests that the 10 twist barrel is the thinest of the rifles and it looks like it might even have a barrel band."
Uh, what barrel band?
Larry Gibson