I don't know what happened to my 2nd photo in the post above. It disappeared, so here it is again.

OLYMPUS DIGITAL CAMERA by Steve Zihn, on Flickr

The 3 farthest to the left were my next group and then I moved the sight just a smidge to the right and fired the last 3, which made the smallest triangle, one inside the black. I can't do any better than that at my age with open sights. so I just left it right there.