Don't let the ES/SD numbers worry you too much. If you're shooting over a chrono you should be able to retrieve them from it. I guess most chrono's provide these numbers.
Just to ease your mind, I have developed some loads that had ES/SD's in the single digits and accuracy ran 3/4 - 1" @ 100yds. I try most of these again usually with the same results. Then again, some of the best groups I have shot have had ES/SD's in the teens and up in to the 20's. These performed well at 100yds, out to 500yds, and are very repeatable.
If you can repeatedly bust clay pigeons at 800yds - rock on - you're doing something very right!