It was brought up a few weeks ago ok here. Only thing I remember is that 7.5's would be the smallest they were loading to begin with due to smaller being illegal in some states.
Reads on the website they're selling #8 and #9.
"These shells are all loaded with TSS. Your choice of 8 or 9 shot with 20ga, 12ga or even our 10ga shells. When all you have is one shot, make it count!"
God Bless,
David B.