Flat top safe heavy bullet .45 loads?

by Slow Hand , Indiana, Saturday, February 25, 2012, 06:02 (5001 days ago)

Cast up some 315 gr .452 bullets last week and wanted to try them in my Ruger flat top. Anyone have a suggested load for something with some thump but safe in the smaller frame.
I've got unique, 2400, lil gun, hs-6, even a little blue dot.

Thanks for any suggestions,
Doug K