Above is a chart for the Rio Outbound, and the second chart is the AFFTA approved weights. I am looking for a line for my Sage, and was questioning how far out of spec many lines are from MOST manufacturers, not just Rio.
Now I know it's wise go up or down a size as needed to adjust for gear and conditions, but look at the above for a minute. I know Outbounds are meant to shoot and not cast, BUT the Rio is 50% heavier than the spec. I think a few years ago, all the rage was to go a line weight or 2 heavier, and the manufacturers jumped on that by implying you could cast farther that way. This might be true for shooting line out, but for casting it's a different story.
Lets say I bite on the marketing, and need a new 5 wt line. I buy a 6 to put a heavy load on a 5 wt because that's the trend...I wind up with a 240 grain (6 wt) on a 5 manufactured for a 140 grain.
Kreh has a great article on flexibility in adjusting equipment,
but how much is too much on marketing lines SO FAR out of spec? Kreh says you might even go 2 line sizes heavier if needed, which could waste my $80 by purchasing a 275 grain, 7 wt Outbound line on my 5 wt that was supposedly designed for 140 grains.
Seems trivial now that I type it, but I think the standard needs to be reeled back in line with spec, or why have the spec in the first place.