20 ga. just tested
 

For anyone interested I just got some test results back from Precision on some 20 ga. loads.

Cheditte hulls 2 1/2" (cut down 2 3/4")
Cheditte 209 primer
Sporting 20-S wad
15.5 gr. Universal
7/8 oz. #7
Avg velocity 1212 FPS Avg pressure 9438 PSI

Identical load except primer, substitute Fioche 616
Avg velocity 1213 FPS Avg pressure 9640 PSI

Got some similar (I hope) in bismuth coming, looking for the perfect teal swatter for September.