TSS Ammo! R U Kidding Me?

I called Carlson to find out which choke to get for my grandson's 20 ga for TSS loads. They said that the TSS choke was only supposed to be used with #7 or smaller size shot. The choke and #7 TSS load hammered his big Tom at about 50 yds last month. Only had 1 pellet in the breast meat. Amazing! We used #8 AA loads to sight in the red dot sight so we didn't waste the TSS's.