I just loaded Clays @ 4gr behind Xtreme 230 gr plated with absolutely no problems with my XD .45. This my first reload with my 550b, and first metallic reload also. I reloaded 12 guage for trap 13 years ago.
So go clays, it's easily seen in the case.
P.S. Thanks to everyone for the info here on this forum. Been lurking a while.