Jay Menefee identified the Polywad spreader issue. There are a couple different ways to deal with it. One is a layer of shot on top of the disc. Another is to modify the disc, which is what Jay did. I tried a modification by punching 3 semicircles around the edge of the disc with a one hole paper punch. Seemed to produce very good spread while doing a better job of filling in the center.
The Polywads definitely spread more than the RST's. But I don't use them any more (although I still have some loaded up in 20ga) and I'm not certain about Polywad's current status. Are they still in business?
