Then you lack in reading comprehension since there was no mention of your "group size" since the objective was to hit a target at 4.4 miles........But you knew that didn't you?
Your own reading comprehension seems to be extremely poor. I clearly said that the question is due to my curiosity. I know there was no mention of group size in the article, because I read it.
Knowing the total area into which those 69 bullets fell would have been more informative than the mere fact that the shooter kept firing until he finally hit a target.