Ammolytics

Posts tagged "Weight Sorting"

Rifle Brass Sorting Experiment - Part Two

In the first part of this series, I spent a significant amount of time and energy measuring several dimensions of the same rifle cases, over and over for five firings. The goal was simple – to measure the relationship between the weight and volume of the cases. The theory-first approach I took does have its merits, but admittedly the results were a bit less clear.

Another valid way to approach this experiment is results-focused. To simply record the performance (muzzle velocity, score, etc) of each case, look for outliers, then try to better understand why they are outliers.

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Rifle Brass Sorting Experiment - Part One

Weight-sorting brass has become a fairly common practice in the world of competitive rifle marksmen and precision reloaders. Similar to bullet sorting, this operation seems intuitive when the goal is maximizing consistency by minimizing variation.

Those who sort their brass by weight may believe that case weight is directly proportional to case capacity and a shortcut to the tedious process of measuring volume with a liquid. Personally, I haven’t seen much evidence to support this belief, so this experiment series will begin by exploring the relationship between case weight and case capacity.

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