Those days are great aren't they? I was shooting like that at yesterday morning. I would walk back to 20yds and shoot.... bam!!! bullseye... Go get my arrow, walk to 12yds, shoot bam!!! bullseye......then back to 20 yds, 18yds, 8yds, 22yds, etc....

I also only shoot one arrow at a time, but based on my shooting, I have a good idea of what group size would be.