I've been loading "Elmer's Baby" for a long time, and I've never run across 230 grain .44 bullets; but it is also that long experience which tells me that there are so many components for this cartridge that I may not have seen them all yet!
From the tone of your post I'm betting you will have a chronograph handy for your experiments, so it's a simple matter of selecting a slow powder like H110 or W296, commencing with the "starting loads", and then easing your way up to the velocity you are trying to attain- watching for pressure signs along the way. I believe I would use the 14" Contender if I were you, although you should have no trouble getting 1440 fps from the 10" tube, either.
The following should help you get started, I hope-
http://www.handloads.com/loaddata/de...Source=Hodgdon
Please let us know how it all works out. I am always willing to learn something new about this fine cartridge.