reflexl is the man on here. Search his posts and he has all the info you need.
Which cup you needs depends on what shot you are shooting.
https://www.ballisticproducts.com/CSD-wads/products/654/For lead I used the CSD 114 which is a 3.5". For the Heavyweight or the TSS the CSD 100 is the ticket. If they are on backorder, just place your order as the company fills their orders first from backordered website items. The cups took 2 weeks one time and the gas seals took about 4 weeks (I found a good pattern without them though, it is on one of my posts).