7133 vs. 8133
The 7133 (13'3" 6/7/8) is a very different rod than the 8133 (13'3" 7/8/9). I have the 8133 and it is capable of throwing a lot of different lines. I have yet to really dial a skagit line for it, but am leaning toward a grain window is the high 600s. The 7133, while a great rod, is probably limited to a somewhat lower number.