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Rifles, Reloading, Optics, Equipment
Reloading
28 Nosler Load Development
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<blockquote data-quote="MagnumManiac" data-source="post: 2797057" data-attributes="member: 10755"><p>I skim read all replies and couldn't find mention whether the brass you used was new or stable fire formed brass?</p><p>I never run group powder tests before seating depth has been tested, this does 2 things, tells you what the gun likes for CBTO and gets you a fire formed case to try other seating depth tests with other bullets.</p><p>A chronograph is not going to tell you where the flat spots are, only a ladder test will tell you this, a chronograph requires ten shots of data at least to be relevant.</p><p>I do all my testing at 100 for seating depth, powder is done at 300 and ALL loads that look promising are tested at 600, which entails 10 shot groups, which is the minimum of anything statistically relevant, a 3 shot group means nothing in precision rifle testing.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2797057, member: 10755"] I skim read all replies and couldn’t find mention whether the brass you used was new or stable fire formed brass? I never run group powder tests before seating depth has been tested, this does 2 things, tells you what the gun likes for CBTO and gets you a fire formed case to try other seating depth tests with other bullets. A chronograph is not going to tell you where the flat spots are, only a ladder test will tell you this, a chronograph requires ten shots of data at least to be relevant. I do all my testing at 100 for seating depth, powder is done at 300 and ALL loads that look promising are tested at 600, which entails 10 shot groups, which is the minimum of anything statistically relevant, a 3 shot group means nothing in precision rifle testing. Cheers. [/QUOTE]
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Reloading
28 Nosler Load Development
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