I had this group last night while practicing from the living room. It is 21 yards and about a 12'-15' drop to my Rhienhart target. I also found a good use for my old target.
Yes I was shooting out the window. I did get yelled at by my wife later when I forgot to put the screen back in and the bugs came in.
This happened to me once too, so I would shut the screen every time I went to get my arrows from the target. One time last summer, my daughter was distracting me as I was shooting from her bedroom, and forgot the pull the screen up. Now, there is a hole in the screen. I was sure to point out to my wife how that was worse than forgetting to pull it back down. You can kill a few bugs, which is easier than replacing the screen. She's always wrong.
Looks like those arrows are in the target at a bunch of different angles. Are you sure they are flying straight? You won't notice much with field points, but Broadheads might make a huge differance.
Might be the flight of the arrow, might just be that they were getting goofy when they got close to each other. You'll notice the ones that have a little more space between them are at the same angle. Good grouping man.
Nice group! Sounds like if i'm going to try that i better wait till the wife goes to one of her stupid scentsy parties, that way i can't get yelled at. LOL