Hello everyone. I can't find a development time for HP5 shot at 100 in HC110 dilution B. I am seeking first hand experience with this combination and film speed. Any help is appreciated. I am switching from Pyrocat mostly because HC110 promises excellent results with a much reduced development time at least in my case.

Going off of available materials it seems that HP5 shot at 400 in HC110 B requires a 5 minute development at 68*
That means that going by the old rule of thumb -20% per stop I am ending up with a development time of about 192 seconds or 3.2 minutes for ASA 100.

That seems awfully short but maybe that's normal for this developer.