I have found that using a volume measurement vs. a weight is better with dry beans. I usually figure 1/4 cup dry beans pp. After cooking they swell (duh) and provide about 1/3 cup serving, sometimes more depending upon other ingredients. You could play with these figures as a starting point.
"Bring it on, you bananna thong wearing killer of brisket!"-Chambers
If you really care about this place, you'll show some respect for it.
Your beard is so stupid, it took two hours to watch 60 Minutes.