IDPA Match Director and revolver shooter here.
I suggest if you think HP38/231 is too dirty, you are never going to be happy with lead bullets. You see, the burning lead lube is a major part of the smoke. The smoke bothers me enough in rapid fire that I now use Berry bullets for IDPA in .45 and .38, with either HP38/231 or Titegroup.

Some people get upset about a spot of soot or a little puff of smoke, while others shoot Unique behind paraffin lube and say "what smoke?"