javiercuellar wrote on Jan 3^rd, 2010 at 11:07pm:

For climb I need the TAT, so I can't use tables, but for cruise speed TAT is not needed. Ex. Base on 727-100 charts, to obtain 0.78 mach at FL250 with 130.000lbs (gross weight), 1.63 EPR is needed.  If you put 1.63, speed will be 0.70 mach, not 0.78M.

OK I understand...thanks Javier.

I guess it's good that I set my EPR by the "trial and error" method  :P