i found this today.

Hopefully Wilbur will delete this thread before it gets too far along.

There are many problems with the information presented in that article, particularly as related to the field of "mechanics of materials".

The behavior of steel crystal lattices, beams, and structures are well understood. The atoms of a steel rifle barrell do not know whether they are a barrell, a structural tube, or an I-beam. They will behave in a predictable manner.

Until the differences between all known material behavior and Bill's vision of how barrells behave are addressed on a 1 by 1 basis, further discussion is futile, and will only result in arguments that are not based on factual information.

SteveM.
 
i don't know how i stumbled onto it, but figured it would be a great read for a great number of us.

http://www.ozfclass.com/articles/1/psm_2005_03.html

Yep. Good read. It would be better if there was some actual physics that supported it. But alas, there is not, but there is a great deal of physics that says it don't happen exactly that way. Which is the basis for 2 or 3 years worth of discussion on this very board - the attempt to reconcile the performance enhancement with the actual reproducible behavior of a steel beam under the influence of a vibratory impulse. There is no telling how many computational hours Varmint Al has put into his FEA modeling in search of the answer to this problem. Only to confirm the lack of any real evidence of the elusive "parallel node" - or how such a phenomenon would improve accuracy in the way it is claimed to do.

There is not a lot of doubt that these tuners DO work. The main contention lies in the explanation, or lack thereof.
 
Many of the best ara shooters have resolved many of these conserns with my Mid-barrel dampners. this year they helped win the ara nationals and the last psl match. I have been pleased to see such great results with a product I supply.
 
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