I love RST's, and I've found that cyl works fine in the WI woods using their 7/8 oz 20ga loads. That being said, although I shot a lot of woods birds last season, the vast majority were woodcock. Shots tend to be a bit closer on average than grouse. When I tested spreaders, I found that the Polywads spread more than the RST's.

For skeet, I can report very positive results with 3/4 oz reloads of 8 1/2's or 9's using Claybuster's 3/4 oz 20ga wad through a 20ga choked C/IC (.000/.007).