You already did the test ["I usually print on Grade 5"] so just increase film development by 25% to give you some more leeway so most images print on grade 2 or 3.
Explanation: Development time tests are to save time and money. Otherwise you need to do experimentation by shooting typical scenes and, processing negatives without knowing if they will be printable on the commonly available paper grades. Since you have already done that experiment and determined your negatives print on grade 5, there is no need to go backwards from there.
Last edited by ic-racer; 08-28-2013 at 04:33 PM. Click to view previous post history.