if your die is adjusted right and headspace is minimal, even the first firing should be plenty accurate for hunting. I don't understand why you would waste components and barrel life just fireforming 25-06 cases in a 25/06. if the headspace is correct, even if the brass doesn't fit the chamber perfectly, it will befor the bullet leaves the leade.
I agree with all of the above plus the fact that FL resized brass is going to chamber easily every time where there are potential problems with neck sized brass. FL size them for hunting.