Get to the range and shoot a few to make sure. I've seen different loads be off as far as 6" at 100 from each other, and not always in a predictable direction. The only way to know is to shoot it. Think about it this way, if the buck of a lifetime steps out in front of you at 150-200 yards, and you miss, you'll be kicking yourself for the rest of your life for not taking an hour or two out of your day to go confirm your zero. Also, 6" off the mark, plus a couple inches shooter error, could easily mean the difference between DRT and wounded but not recovered. Get thee to the range!

Mike