Tony,
How is the synthetic rigging experiments coming on?

Sorry I can't answer your question but If you don't already have it, the following may help.

1x19 316 2.5mm stainless wire breaking strain is 500kg.
1x19 316 3.0mm stainless wire breaking strain is 720kg.
1x19 316 4.0mm stainless wire breaking strain is 1285kg.

It would be interesting to develop a table that will give breaking strain in kg versus strands of the material you are using.

Regards,
Phill

I know that the voices in my head aint real,
but they have some pretty good ideas.
There is no such thing as a quick fix and I've never had free lunch!