This is the official AFTMA (American Fishing Tackle Manufacturers Association) chart of fly line grain weight specifications that are based on the front 30' of a fly line.
Our website tells you the grain weights for each line in the description for comparison. That will tell you whether a particular line is true to size or overweighted.
| |
|
Weight in Grains |
|
| Line Weight |
Low |
Target |
High |
| 1 |
54 |
60 |
66 |
| 2 |
74 |
80 |
86 |
| 3 |
94 |
100 |
106 |
| 4 |
114 |
120 |
126 |
| 5 |
134 |
140 |
146 |
| 6 |
152 |
160 |
168 |
| 7 |
177 |
185 |
193 |
| 8 |
202 |
210 |
218 |
| 9 |
230 |
240 |
250 |
| 10 |
270 |
280 |
290 |
| 11 |
318 |
330 |
342 |
| 12 |
368 |
380 |
392 |
| 13 |
435 |
450 |
465 |
| 14 |
485 |
500 |
515 |
| 15 |
535 |
550 |
565 |
| |
|
Weight in Grains |
|
| Line Weight |
Low |
Target |
High |
| 1 |
54 |
60 |
66 |
| 2 |
74 |
80 |
86 |
| 3 |
94 |
100 |
106 |
| 4 |
114 |
120 |
126 |
| 5 |
134 |
140 |
146 |
| 6 |
152 |
160 |
168 |
| 7 |
177 |
185 |
193 |
| 8 |
202 |
210 |
218 |
| 9 |
230 |
240 |
250 |
| 10 |
270 |
280 |
290 |
| 11 |
318 |
330 |
342 |
| 12 |
368 |
380 |
392 |
| 13 |
435 |
450 |
465 |
| 14 |
485 |
500 |
515 |
| 15 |
535 |
550 |
565 |
Have more questions? Contact us or watch this video we made explaining the concept: