Thread: SS109 load data
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Old January 26, 2020, 05:09 PM   #12
Unclenick
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Join Date: March 4, 2005
Location: Ohio
Posts: 17,177
The weight differences probably reflect what tooling the bullets came off of. If you sort them to the nearest 0.1 grains, you will probably find there are several narrow bell curve-shaped distributions, each around a peak for each set of tooling whose output was combined to make up the lot. If you identify a couple of dozen bullets as likely off one of each of the same set of tooling (select them from the peaks), you can try shooting them to see if one tool tended to produce a more accurate bullet than the others, if you even care about that. As for the weight affecting pressure, just get a load that is safe with the heaviest bullets in the lot and the weight difference will then not to matter to anything but very long range accuracy.
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