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Rifles, Reloading, Optics, Equipment
Reloading
Extreme Velocity Spread Question - I'm perplexed
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<blockquote data-quote="Pdvdh" data-source="post: 519135" data-attributes="member: 4191"><p>Mike,</p><p>I'm sure the ultasonic cleaning simply changed the coefficient of friction between the bullet and the interior case neck. It was a real surprise when seating the first bullet - a greatly increased force on the press handle required to seat bullet. The next thing I encountered was the need to screw down the micrometer seating depth adjustment on the Redding Competition seating die substantially to obtain the same case head to Ogive length on the seated bullets - compared to fired cases without the ultrasonic cleaning. </p><p></p><p>I've about decided ultrasonic cleaning is more trouble than it's worth. I don't tumble, vibrate, or ultrasonic clean any brass any longer. Other than if I find some pickups in the field with some dirt or corrosion on them - pretty much solely for use in the AR-15 or pistol/revolvers. I'll ultrasonic clean them. But I still Imperial wax the case necks prior to the first powder charging to reduce bullet seating force.</p><p></p><p>Edit addition: Except for my Ruger Alaskan .454 Casull. If I Imperial waxed those case necks, all the remaining loads in the cylinder would jump there crimp and leave me with a jammed revolver and a single shot revolver... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Pdvdh, post: 519135, member: 4191"] Mike, I'm sure the ultasonic cleaning simply changed the coefficient of friction between the bullet and the interior case neck. It was a real surprise when seating the first bullet - a greatly increased force on the press handle required to seat bullet. The next thing I encountered was the need to screw down the micrometer seating depth adjustment on the Redding Competition seating die substantially to obtain the same case head to Ogive length on the seated bullets - compared to fired cases without the ultrasonic cleaning. I've about decided ultrasonic cleaning is more trouble than it's worth. I don't tumble, vibrate, or ultrasonic clean any brass any longer. Other than if I find some pickups in the field with some dirt or corrosion on them - pretty much solely for use in the AR-15 or pistol/revolvers. I'll ultrasonic clean them. But I still Imperial wax the case necks prior to the first powder charging to reduce bullet seating force. Edit addition: Except for my Ruger Alaskan .454 Casull. If I Imperial waxed those case necks, all the remaining loads in the cylinder would jump there crimp and leave me with a jammed revolver and a single shot revolver... :) [/QUOTE]
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Extreme Velocity Spread Question - I'm perplexed
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