I have some Federal Blue Box 12 gauge sabots. 2 3/4″. If interested, I can give you a price. I am unsure of what i have for a stock pile, used to shoot them in my Ithaca Deer Slayer II, but since Iowa allowed rifles, I have been using my 45/70.
I was able to locate some using the ammoseek website and ordering online. Not sure what you think about ordering online but I have struck out at Scheels and Fleet farm etc. for the past month. If you are ordering for next weekend I think I would make an order sooner than later though.