If it says you need to dial down 1.5 mils at 100 yards you aren't zero'd at 100 yards and it isn't set up '100% correct'
The problem is probably in your profile, under gun properties like Verdugo said, zero height and offset should be set to "0" and sight height is your height over bore, you need to make sure you have an accurate measurement on that because it will goof you down range if its incorrect. Is that the sole reason you are asking about accuracy problems? Mine has been spot on out to around 1150yds...
I can take screen shots of the setup if you need it but it sounds like we already have a basic settings problem. If you are zero'd at 100yds and it is telling you to dial down, here is what I think you may have done. Open the profile loader and profile, mine defaults to metric units. Make sure you didn't set your zero range to 100 METERS or some other oops having to do with the units. If you are using mils make sure that is the output unit, not MOA or clicks, and make sure the input is english for yards and inches.