I would go with a softer lead for the 230gr's as well. Harder is better for some calibers but for the ones it isn't will not expand to fill the grooves in the barrel and velocities/ accuracy as well as barrel leading can be affected.
Then there is the coated. They seem to be gaining ground. Not loved by all for their smell, most people report much less smoke as lube is not needed. A few casters/bullet makers are offering them...
http://www.snscasting.com/45-acp-1/
http://www.bayoubullets.net/45_ACP.html
and some here have been coating their own
http://thefiringline.com/forums/show...coated+bullets