I actually like arfcom better than m4varbine here lately. M4 has too many "warriors" who've wrote all the rules and if you don't go to an approved training class twice a month, you can't possibly know anything. Arfcom has a good equipment exchange, the rest doesn't interest me.
Now about those 5 shot groups, notice how they are not in the same point of impact, if you overlap 4 of them for a 20 shot group, they open up a bit.
