What are the AFTMA Fly Line Weight Ratings

Frank Whiton

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This chart shows the relationship between various line weights and the required line weight used on a certain weight rod. You can see that if you over line a rod you must have less line out to properly flex a rod. Or, if you under line a rod you must have more line out to properly flex a rod. This relationship is very important when using add-on sink tips on a floating line.



AFTMA Fly line weight ratings (grains)

Weight Grains Tolerable Range

1 60....................54-66
2 80....................74-86
3 100..................94-106
4 120..................114-126
5 140..................134-146
6 160..................152-168
7 185..................177-193
8 210..................202-218
9 240..................230-250
10 280.................270-290
11 330.................318-342
12 380.................368-392

Grains are weighed over front 30 feet of line.
 
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