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Rifles, Reloading, Optics, Equipment
Reloading
New IMR powders
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<blockquote data-quote="wildcat westerner" data-source="post: 1141957" data-attributes="member: 21361"><p><strong>Re: New IMR powders-reply</strong></p><p></p><p>Hello,</p><p></p><p>Thanks for your replies. Thank you jCub for you reply which closely mimics applied physics. Logically a 25% larger case should be able to have higher velocities, than a smaller case. I look at some of these huge cases used to attain a small increase in velocity and it seems ridiculous to me from a period some years ago. As a writer for Precision Shooting, we did an experiment with Savages' help. A .460 Weatherby was necked down to .22 and loads such as 120 grains of powder behind a 55 gr. bullet produced 5,016 fps, and 6 3/8" throat erosion with just 78 rounds fired. A 6/284 of mine with a Krieger 32 inch barrel produced 3,564 fps with 107 gr. Sierras. That throat lasted just 400 rounds.</p><p></p><p>So, it would seem you"cannot get something for nothing". However, if you can gain the same velocity no matter the temperature varience, with reduced copper fouling, that is a huge leap forward to me.</p><p>Thank you,</p><p></p><p>Gene</p></blockquote><p></p>
[QUOTE="wildcat westerner, post: 1141957, member: 21361"] [b]Re: New IMR powders-reply[/b] Hello, Thanks for your replies. Thank you jCub for you reply which closely mimics applied physics. Logically a 25% larger case should be able to have higher velocities, than a smaller case. I look at some of these huge cases used to attain a small increase in velocity and it seems ridiculous to me from a period some years ago. As a writer for Precision Shooting, we did an experiment with Savages' help. A .460 Weatherby was necked down to .22 and loads such as 120 grains of powder behind a 55 gr. bullet produced 5,016 fps, and 6 3/8" throat erosion with just 78 rounds fired. A 6/284 of mine with a Krieger 32 inch barrel produced 3,564 fps with 107 gr. Sierras. That throat lasted just 400 rounds. So, it would seem you"cannot get something for nothing". However, if you can gain the same velocity no matter the temperature varience, with reduced copper fouling, that is a huge leap forward to me. Thank you, Gene [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
New IMR powders
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