I just recently picked up the RCBS Matchmaster micrometer die for my 6.5CM. the COAL I need is 2.810. I'll have it set right at this measurement, but I'll have some measured at 2.810 and some will be at 2.811 and 2.812. Does anyone have this issue? If so, what causes it to be off and will that small of amount of measurement have a drastic effect on accuracy out to 1400 yards? I noticed I'll hit a 12"x24" plate 4 times in a row out at 1100 yards and then miss a couple here and there. Me? Wind? Or the COAL? Trying to see if I can leave the COAL out of the miss equation. LOL! Rifle is Sako TRG 22.