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Rifles, Reloading, Optics, Equipment
Reloading
Loading to magazine length/bent tips
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<blockquote data-quote="CONatureBoy" data-source="post: 2217046" data-attributes="member: 118769"><p>I am a data scientist. I did my doctoral work at Stanford in industrial engineering. I have taught graduate-level classes in data science, probability, and statistics. I have spent several years of my career modeling high-speed manufacturing assembly-line data, so I know a little about the sorts of mathematical models one uses to account for variations in the outcomes of mechanical processes. I'm purely an amateur shooter, but I do bring my professional and academic training to bear on my handloading. I have read a half-dozen engineering-oriented and practical books about ballistics and handloading. I read reloading manuals for fun, because I like to think about data-generating processes and the numbers they produce.</p><p></p><p>My personal experience only amounts to a small sample, statistically speaking (handloading for perhaps two-dozen rifles). The rifles have ranged from an ultralight mountain gun to a heavy-varmint-taper target/varmint rig. I mostly hunt with blueprinted Remington 700s in calibers from 264 Win Mag to 300 RUM. My hunting rigs all have Jewell triggers, aftermarket firing pins, and the other usual goodies. I have loaded mostly Nosler, Sierra, Hornady, and Berger bullets--VLD and Elite Hunter Bergers especially. As I wrote earlier: <em>in my own experience</em> some bullets (e.g. Nosler Ballistic Tip) achieve half-MOA accuracy loaded well away from the lands, and exhibit low sensitivity to seating depth. For hunting purposes I'm content to load these at the maximum SAAMI COAL. Others (especially Berger VLDs) have been easier to get half-MOA accuracy from when I start load development within a few thousandths of the lands. Starting near the lands, I have never had to tune the cartridge length, with Berger VLDs. Starting away from the lands, I have had to lengthen the cartridge to achieve my accuracy goals. Every time I shoot my rifles it's quite obvious to me that my rifles shoot more accurately than I do. My varmint/target rifles shoot into 1/3-1/4 MOA routinely. My hunting rifles, 1/2-1/3 MOA. I'm only good on game to about 600 yards, so I'm nothing like an expert shooter. I just know a little math.</p><p></p><p>I don't mean to come across as attacking you, so if you heard that I apologize. I am critical of some of your internal-ballistics opinions because I doubt their scientific basis. I'm also willing to say that your aggressive language detracts from my own enjoyment of this forum, whose members seem mostly inclined to write with a lot of mutual deference and a good sense of humor. I wish you'd decide to adopt the same attitudes in your own posts. There's a big difference between someone disagreeing with your opinions and attacking you personally. I only intend the former. On the whole this is a really fun forum to read. I learn a lot here.</p></blockquote><p></p>
[QUOTE="CONatureBoy, post: 2217046, member: 118769"] I am a data scientist. I did my doctoral work at Stanford in industrial engineering. I have taught graduate-level classes in data science, probability, and statistics. I have spent several years of my career modeling high-speed manufacturing assembly-line data, so I know a little about the sorts of mathematical models one uses to account for variations in the outcomes of mechanical processes. I'm purely an amateur shooter, but I do bring my professional and academic training to bear on my handloading. I have read a half-dozen engineering-oriented and practical books about ballistics and handloading. I read reloading manuals for fun, because I like to think about data-generating processes and the numbers they produce. My personal experience only amounts to a small sample, statistically speaking (handloading for perhaps two-dozen rifles). The rifles have ranged from an ultralight mountain gun to a heavy-varmint-taper target/varmint rig. I mostly hunt with blueprinted Remington 700s in calibers from 264 Win Mag to 300 RUM. My hunting rigs all have Jewell triggers, aftermarket firing pins, and the other usual goodies. I have loaded mostly Nosler, Sierra, Hornady, and Berger bullets--VLD and Elite Hunter Bergers especially. As I wrote earlier: [I]in my own experience[/I] some bullets (e.g. Nosler Ballistic Tip) achieve half-MOA accuracy loaded well away from the lands, and exhibit low sensitivity to seating depth. For hunting purposes I'm content to load these at the maximum SAAMI COAL. Others (especially Berger VLDs) have been easier to get half-MOA accuracy from when I start load development within a few thousandths of the lands. Starting near the lands, I have never had to tune the cartridge length, with Berger VLDs. Starting away from the lands, I have had to lengthen the cartridge to achieve my accuracy goals. Every time I shoot my rifles it's quite obvious to me that my rifles shoot more accurately than I do. My varmint/target rifles shoot into 1/3-1/4 MOA routinely. My hunting rifles, 1/2-1/3 MOA. I'm only good on game to about 600 yards, so I'm nothing like an expert shooter. I just know a little math. I don't mean to come across as attacking you, so if you heard that I apologize. I am critical of some of your internal-ballistics opinions because I doubt their scientific basis. I'm also willing to say that your aggressive language detracts from my own enjoyment of this forum, whose members seem mostly inclined to write with a lot of mutual deference and a good sense of humor. I wish you'd decide to adopt the same attitudes in your own posts. There's a big difference between someone disagreeing with your opinions and attacking you personally. I only intend the former. On the whole this is a really fun forum to read. I learn a lot here. [/QUOTE]
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