Pushing 35mm Delta 400

I am looking for suggestions for pushing Delta 400 to 800 in Xtol. I find the Worlds biggest B&W development chart to be off by about 15% for my set up when rating Delta 400 @ 400. Should I try the reccomended time X 15%? How forgiving is the film of development? Is their a difference when using Delta with flash as apposed to natural light?

[ Previous | Next ]