here is a thread I posed a year ago about 50# pp and 55# samurai.
http://www.striped-bass.com/Stripert...ad.php?t=85569
in Summary, I did my own test with 5' lengths and found both failing
just under 30#.
I really think Linesider82's concerns are spot on regarding the
engineering of these lines. I was considering on moving to 30#
fireline and trying it out this fall, but now I am starting to think I
might go with 20# instead.
Last year I used 65# spiderwire invisibraid....just couldn't get around
the penalty in the casting distance. If 30# fireline has the same
diameter as 65# braid then I definitely will avoid it, but for the
chunking it may be the ticket. Especially considering you are
thinking about jumping up to 80#.
Good Luck!