Steve, all I used was the Ballistic Calculator in Excel I got from someone on this site.
I shot the round I'm using for hunting and got an average of 2540fps. I set it + 2.4" at 100 to get a zero at 200yds.
I don't know how to get my ball plex zero's. I know Exbal will do it but haven't used it yet. I shot everything at 6x on the scope.

Mike

You don't quit playing because you get old, You get old because you quit playing.