String breakage with Pure Sound

[Ron Nossaman]

> Mas Cabré's "Breaking Strain" is another thing altogether-- quite what I 
> have no idea, and I think it was Ron Nossaman that said he used this 
> value BUT, instead of my 70%, aimed not to exceed 50%.  If your 
> calculations tell you you've gone to 55% then you've gone too far.

I use Sanderson's formula for steel wire, mostly not exceeding 
55% on bass strings. I've not used Pure Sound.

Ron N