In a recent post by James Holst on Lead Core and Cranks on Mille Lacs it was noted that they were using the new Sufix Performance Lead Core Line and getting extremely deep for what we are used to. it was surmised that the sheath on the Sufix Performance Lead Core must be thinner than the normal nylon sheath on most other lead core lines allowing less drag and more sink per color and less overall line out to achieve a given depth. I found the tech data for the Sufix Performance Lead Core and took a look at it against Western Filaments Tuf-Line Lead Core to see for myself. Here is what I found:
Diamater in inches
Lb Test / Sufix 832 / Western Filament
12 / .021 / .025
15 / .022 / .030
18 / .025 / .037
27 / .029 / .045
36 / .033 / .056
The diamaters are quite a bit different explaining a difference in the running depth of the Sufix vs. other lead core lines (Western Filaments Tuf-Line assumed to closely mimic other nylon coated lead cores). As lb test goes up the difference in line diameter is greater and the difference in sink rate is also likely to be even greater as well. This is similar in concept to the reason that cranks go deeper on braid than on mono of equivalent lb. test.
Looks like I might have to spool up a couple of reels with the Sufix and give it a try!!!