I believe there are some that can do it, but eventually there will be some external force exert its influence and move the bullet.
If 1 MOA at 100 yards is roughly 1" and 1 MOA at 200 yards is 2", then 1 MOA at 50 yards is 0.5" and at 25 yards 0.25". At an indoor range with a good setup one could image that you could put them all in one hole easier than a 1" group at 100 yards.
If there isn't a photo then it never happened.
Gun Log SPC iOS Range Book
If you find your back is up against a wall, maybe you have been backing up for too long.