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Rifles, Reloading, Optics, Equipment
Reloading
Load Development for .357 Revolver
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<blockquote data-quote="budlight" data-source="post: 2626445" data-attributes="member: 2939"><p>It's science and very logical not Leery! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Look up how Pistols and rifles are just the same. Jumping to the lands decreases pressure because the volume is increasing before the bullet hits the resistance of the lands. </p><p></p><p>Roy Weatherby and his engineering team had this figured out 70 + years ago. They put lots more grains of powder in their cases compared to contemporary rounds. Example : The case volume increase in grains of water was minor compared to the volume of the .361 freebore before the lands in a 300 weatherby magnum. Go to an online calculator for volume of a cylinder and do the math! .308 diameter X .361 Plus the volume of max magazine length of the round compared to chambered. Like a typical rifle seating depth. </p><p></p><p>So the shorter 38 special has basically no resistance moving forward in the cylinder. I'm also using the slowest pistol powders Like 18 grains behind a 158gr. pill. 300-MP. My 10 inch is launching 158's at over 1600 fps without bragging about exacting chrono data. They are really smoking out of lever actions with 18 inch barrels</p></blockquote><p></p>
[QUOTE="budlight, post: 2626445, member: 2939"] It's science and very logical not Leery! :) Look up how Pistols and rifles are just the same. Jumping to the lands decreases pressure because the volume is increasing before the bullet hits the resistance of the lands. Roy Weatherby and his engineering team had this figured out 70 + years ago. They put lots more grains of powder in their cases compared to contemporary rounds. Example : The case volume increase in grains of water was minor compared to the volume of the .361 freebore before the lands in a 300 weatherby magnum. Go to an online calculator for volume of a cylinder and do the math! .308 diameter X .361 Plus the volume of max magazine length of the round compared to chambered. Like a typical rifle seating depth. So the shorter 38 special has basically no resistance moving forward in the cylinder. I'm also using the slowest pistol powders Like 18 grains behind a 158gr. pill. 300-MP. My 10 inch is launching 158's at over 1600 fps without bragging about exacting chrono data. They are really smoking out of lever actions with 18 inch barrels [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Load Development for .357 Revolver
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