Roy Lewallen wrote:

SNIPPED

What's lacking is good measured data for typical shields, and even
that's going to have limitations because of the wide variations among
cables and manufacturers. But even some rules of thumb will be useful.

But you've shown an interest in the topic. Why don't you make some
measurements of coils made from tubing and from coax shields and report
back?

Roy Lewallen, W7EL

I've been away from that measurement field [integrity of coaxial braid
shields] for almost 15 years. Measured data does exist for the effects
of shield parameters [weave angle, optical coverage, # strands {picks},
wire gauge, etc.] based on using traveling wave excitation of the braid
itself in either quadraxial test fixtures or over a controlled ground
plane with known Zo between the cable and the plane. Test methods are
IEEE defined [after 15+ years I can't recall a specific IEEE Test Method
reference]. These quantify a 'leakage inductance'.