Originally Posted by
Larry Gibson
No, those flyers were not "flawed". They are out there because they have exceeded the RPM Threshold. Also, unless you have 2 holes hidden by the coin then they are off the paper. If those 2 missing shots are not under the coin 45+% of the shots were flyers out of the group. Also comparing the size of that group to the 50 yard group it's pretty obvious the group expansion is much larger than it should be if it were linear in expansion. Were you to test at 200 yards you would find the group expansion much worse.
With your AR if you want speed you got it. As to accuracy; at least kind of at 100 yards. However if accuracy of which your rifle should be capable of, even with cast, then you must sacrifice speed for it. Suggest you start even lower where you'll find the best accuracy will be right at functional reliability. Traditional 5.56 powder do not work well in that arena with 55 gr traditional lubed bullets. You should try 4198, RL7, H4895 and give a dacron filler a try.
Just depends on what you want and will be satisfied with given the size of the target and max range you be shooting at.