Comparative Table of Fly Line Sizes

Modern WF or DT

Weight in Grains

Old DT

Old WF

3

100

IFI

IFG

4

120

HFH

HFG

5

140

HEH

HEG

6

160

HDH

HDG

7

185

HCH

HCF

8

220

GBG

GBF

9

250

GAG

GAF

10

300

G2AG

G2AF

11

350

G3AG

G3AF

12

400

G4AG

G4AF