Originally Posted by Rip Tide
I do that all the time and I haven't noticed that it matters.
I do it all the time as well. I have also never noticed a difference. I can only add to that in that I have had a lot of my leaders tested and have not had knot failures.
I generally use ANDE Tournament line to build leaders. I go 10lb differences in knots all the time and have not seen a problem. The difference between 20 and 30 for example is way more than .002". In fact I would flat out disregard that. Seriously, to build the 15' leaders I use for two hand rods following that rule would be about what? 40 pieces of line?
Even if you could find the right lines to fill that in which I doubt.