Out of curosity I weighed the first 30 feet of the fly line that comes with the Sage Smallmouth Bass rod and it weighed 1/32nd of an inch past 280 which is what a 10wt is suppose to weigh according to the scale. Since it went past the 280 mark just a little, I have to assume the first 30 feet is 290. According to my scale a 11wt line is suppose to weigh in at 330. The rod is marked as 290. Unfortunately, I do not have any 10wt line to compare the 2 lines to see if there is any difference between the 2 when layed side by side. This probably does not answer your question, but, I have always wanted to weigh the first 30 feet and your post gave me the initiative to do it, so, thanks.