searcher
Gold $$ Contributor
While prepping match brass, I have always started with a large quantity of brass and broke down by weight batches which varied in weight separation depending upon the gun to be used, the difference in the batch of brass, etc. For the purposes of this question, lets say .5 grain batches. This weighing was always done AFTER neck turning, primer pocket uniforming, flash hole uniforming, etc. - where any operation was involved that removed any brass.
After many firings, (maybe 20 on my PPC) a few neck touchups for doughnuts, etc., I had never reweighed the brass. My theory was that as long as I wasn't doing load prep that might make brass on a few loads flow more than another (and need more trimmed off when length trimming), they should theoretically stretch in approximation to one another and end up pretty close in the same weight to one another after all of these firings and several length trimmings. While this blind-eye method has served me well in practice, has anybody regularly weigh their brass AFTER the initial weighing and found weight differences nearly or as significant as before they did the first sorting- even though all of the pieces have had the same load, same maintenance , etc. over the life of the brass?
After many firings, (maybe 20 on my PPC) a few neck touchups for doughnuts, etc., I had never reweighed the brass. My theory was that as long as I wasn't doing load prep that might make brass on a few loads flow more than another (and need more trimmed off when length trimming), they should theoretically stretch in approximation to one another and end up pretty close in the same weight to one another after all of these firings and several length trimmings. While this blind-eye method has served me well in practice, has anybody regularly weigh their brass AFTER the initial weighing and found weight differences nearly or as significant as before they did the first sorting- even though all of the pieces have had the same load, same maintenance , etc. over the life of the brass?
