I've used the same basic load except using the Rem Fig 8 Wads or the Downrange clone and 16.5 gr powder. Works fine for Red Dot too. I can't say anything about the Claybuster wad, since I didn't try them. These loads chrono'd around 1130, so adjusting for the "light" screen style cronograph, they'd be close to 1100 fps.
Thanks. When I started a few years ago, I used a 1100 fps Hodgdon Clays load and after I got to the 25, I started using handicap loads. Iam on the 27 now but for my wife I see the need for the lites since it worked for me. 1 oz just doesn't seem to be the answer.