For tactical I want to shoot heavier 69gr for long range, 200yds and out and 55's for the rest of the course. I have a millet1-4 zeroed @ 100 with 55's. I shot my 69gr test loads today and of course the poi is much different. Would I be better served to get a zero stop scope, dial it in @ 100 with 55's, set my knobs then when I shoot the 69's,I can adjust the knobs for those and still have zero for 55's??