Using the dove loads is fine to get a rough idea of POI and make sure your turkey loads will be "on paper", but it will almost certainly be a bit different with the turkey loads. The best way to get an assessment of your pattern and also to dial in your sights is to shoot at a large piece of paper, at least 36"x36" so you can see the entire pattern. Then locate the densest portion, and sight in for that. You will also want to see what your turkey loads are doing at close ranges like 10-20 yards. With a lot of the really tight chokes, pinpoint accuracy at close range is going to be important.