I would like to hear more about the 40% rule. This is something new to me that I have not heard before. Is this something that Mr. Seyfreid came up with via his experiments or is this old science rediscovered? Does this apply only to IMR4198.

The only misgivings I have about the topic is the use of Dacron. Does Mr. Seyfreid offer an explantion for dacron loads being "blamed" for ringing chambers?