This is and area that has been sparse for many years.
We need a 1 oz Foster slug that can be put in a 1 oz shotcup and fired at 1,600 fps with good accuracy. We do not want to mess with cards or felt pads. If it exists, I would like all the info that I can get on where to get the things needed to do so.

With all the new stuff out now, would like the same info on the sabot bullets and sabots. A reloader can beat $17.50 for a box of 5 shells. He can also tinker around and get the speed right for his barrel. What caliber bullets and weights are used in sabot shells?

Need web sites for the ones suggested.
Long cold winter coming up and there will be lots of time to make your own, of either or both.