I have used 231 7.0 - 7.2 under a 260SWC-PB / 10bhn, in my 625-6 MG (.45 Colt), w/ very good results. Accurate, & although a bit snappy - not over pressure. Fairly clean burn too, as I recall.
I suspect 231 would work great w/ 200 lead, although I've not tried it.
My pet load for this revolver is V V N-330 7.8, under a 11-12 bhn 265 Keith bullet (.452"), from Joe at Black River Bullet. Just friggin' perfect!