Charlie - I come from a past history of benchrest shooting competitions in my yoot. I was making my own .224 bullets in 1958 in order to control the accuracy of same and try to be in the top 5 or at least mentioned in the top 10.
My last venture into casting .50 cal. muzzleloader bullets opened my eyes to the wide variation in bullet weights coming out of my molds. I did a careful analysis of performance by weight and found that the closer the batches of bullets weighed the better results. I never determined where the glitch was in the weight differentials, but, the weighing, sorting and loading by weight batch and stored in marked (by bullet weight) containers made a difference.
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