I'd start with the HP38 load range shown in the load book picture. It is the same powder as the W231 you have. I've shot 4.8 grains of HP38/W231 under that 250 grain bullet and it shoots great out of my Colt Commander. Didn't chrono it, but I'm guessing just touching 700 fps. I also used HS6 with similar results.
If you look over on 1911Forum.com, there are a few guys who shoot heavy bullets exclusively. They use Unique and other mid-range powders. AA 5 might also be good (there is load data for a similar plated bullet in my Lee manual). I'd stay away (AWAY!) from the fast powders like Titegroup/Bullseye/Clays/WST due to the increased seating depth and pressure.
Last edited by Hammerdown77; 02-21-2011 at 09:32 AM.
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