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Rifles, Reloading, Optics, Equipment
Reloading
Kudos to Nosler for meeting their brass weight tolerance spec
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<blockquote data-quote="Michael Courtney" data-source="post: 926540" data-attributes="member: 28191"><p>Those who follow our publications may have noticed that we're not slow to criticize companies like Nosler for failing to meet their ballistic coefficient specs or companies like Berger whose bullets don't always meet their weight specs.</p><p></p><p>When I read in the March American Rifleman that Nosler claims a +/- 1/2 grain weight specification on their brass, I couldn't resist checking that against our spreadsheet records. The Air Force kindly provided use of a precision scale, and we were in the habit of weighing new brass and bullets for several years, including Nosler brass in cartridges where Lapua brass was unavailable.</p><p></p><p>It turns out that the Nosler brass we measured was true to their spec of +/- 1/2 grain in both .25-06 Rem and .300 Win Mag with extreme spreads of 0.94 and 0.99 grains, respectively. From the distribution of weights, it is also clear that they are weight sorting as they claim, because the distribution is relatively flat and does not have the "tails" that unsorted manufacturing distributions tend to have. </p><p></p><p>For comparison, our measurements in R-P brass tend to have extreme spreads of 3-4 grains; whereas, Lapua brass tends to come in with extreme spreads of 1-2 grains.</p></blockquote><p></p>
[QUOTE="Michael Courtney, post: 926540, member: 28191"] Those who follow our publications may have noticed that we're not slow to criticize companies like Nosler for failing to meet their ballistic coefficient specs or companies like Berger whose bullets don't always meet their weight specs. When I read in the March American Rifleman that Nosler claims a +/- 1/2 grain weight specification on their brass, I couldn't resist checking that against our spreadsheet records. The Air Force kindly provided use of a precision scale, and we were in the habit of weighing new brass and bullets for several years, including Nosler brass in cartridges where Lapua brass was unavailable. It turns out that the Nosler brass we measured was true to their spec of +/- 1/2 grain in both .25-06 Rem and .300 Win Mag with extreme spreads of 0.94 and 0.99 grains, respectively. From the distribution of weights, it is also clear that they are weight sorting as they claim, because the distribution is relatively flat and does not have the "tails" that unsorted manufacturing distributions tend to have. For comparison, our measurements in R-P brass tend to have extreme spreads of 3-4 grains; whereas, Lapua brass tends to come in with extreme spreads of 1-2 grains. [/QUOTE]
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Kudos to Nosler for meeting their brass weight tolerance spec
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