On 5 Dec, 23:23, Ken Fortenberry
wrote:

Total nonsense.
--
Ken Fortenberry

Unfortunately, unlike AFTM line ratings (which correspond directly to
the weight of the first 30 feet of the line), the rating of fly rods
is subjective. For example, I might test a fly rod and consider it
perfect for a number 6 line, while someone else deems the same rod
better suited to a number 7 line. In my experience, American
manufacturers tend to under-rate their rods, which often work better
with lines one or two sizes heavier than indicated.

MC