You don't have any drop at 25 yards, your scope is mounted higher than the bore of the rifle, probably about 1.75 inches...
Now, I would suggest sighting in about 2 inches high at 100 yards, then you can hold dead on the lungs of a deer and be no more than about 2.5 inches high or low out to about 225 yards...Out to 250-300 you would need to hold a few inches high to hit where you want...
Have fun!!!