I have used that rod, and many other 9wts, with a 30ft leadcore shooting head made from Cortland LC-13 (390 grains) and 28 ft shooting heads made from Rio T14 (392) grains. I get uncomfortable when casting heads heavier than that on a 9wt. I know some who use 30ft of T14 (420grns). The rod will handle 400 grains just fine. 450 too if you casting skills are up to it. 450 is a bit heavier than a 13wt fly line.