On the Foxtrot train here. No experience with your gun or choke though.
Initially shot the Hot Rod load and straight 9s through a Mossberg 500 and IC 555. That produced 320+ in a 10" at 40 and worked great in the field the past couple years. Moved up to straight 8.5s in the Hot Rod load with great patterns (245+) through the IC .555.
But starting this year I'm shooting the Foxtrot HSHDT with a 1.5oz. load of straight 8s. The HSHDT load will put 235+ in a 10" at 40 with these with the IC .555, with fewer flyers in the patterns, and the added energy of the TSS #8 is a plus.
You'll see more difference in the choke tube you try, for example I shot handloaded TSS through this same IC 555 choke with near identical performance to Foxtrot loads. But the 22" Mossberg 500 barrel did not take a liking to the IC .562 using any of the above loads and shot sizes, so I sold that tube. Difference for this gun between IC 555 and 562 was night and day, about 10% - 20% less core pattern depending on the load, but still very huntable pattern though.
The forum member who bought that IC 562 is the other way around, his gun much prefers the .562. Just gotta try different stuff.