5.6 of 231 and 5 of Bullseye sounds very hot. he was looking for a milder load.
I load 5.5 gr of 7625 under the plated 180 SWC because it is very accurate in my gun. Gives 925 fps in my pistol. Not exactly "mild".
If I was looking for a mild load, I would try a lead 180 bullet and 3.0 to 3.5 of 231.