I started using it this winter when I finally used up all of my Clays. Ran a few test loads through the chronograph and on the patterning board, ended up with the same recipe I used for Clays:
STS hulls
Claybuster CB-1100-12 wads (pink AA clone)
Rem primer
1 oz #8 or 7 1/2 shot
18.0 gr. Clay Dot
average velocity just under 1200 fps
Burns pretty clean, identical to Clays for all practical purposes.
