I don't know how manufacturers derive their numbers, but they're wildly optimistic, in any case. Tell us what your reel(s) hold. Daiwa Exceler 4000, advertised 260 yards of 12# test.:roll_eyes: Actual: 150 yards of 60# Spidewire (12# dia), but it's really overfilled. 150 yards of 30# Power Pro (8# dia) is a nice comfortable fit, with a little room to spare. 40# PP would be just about right. A great mid-sized spinner, btw.