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Rifles, Reloading, Optics, Equipment
Reloading
Deburring Machine!?!?
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<blockquote data-quote="Bart B" data-source="post: 508249" data-attributes="member: 5302"><p>Those cutters will do the same when hand held. Though the machine may make the task faster.</p><p></p><p>While the outside end of the tool does great for the outside of the case mouth, the inside one's not all that great no matter how it's used. It leaves too sharp an edge where the angled part mates with the inside of the case mouth. This means bullet jacket material still get scraped off when the bullet's seated. And removing jacket material tends to unbalance bullets; they don't shoot as accurate as those with no jacket material removed. Use a magnifying glass to inspect seated bullets at the case mouth and you'll see tiny peelings of copper shaved off the bullet right at the case mouth.</p><p></p><p>I use an Easy-Out screw extractor tool turned clockwise to debur most of the inside edge after trimming a case to length. This makes a shallower angle than standard deburring tools such as those shown in your post. Then I run the case mouth over a bore brush spun by a drill press to smooth out and make the inside edge cleaner and rounder. Bullets seated in case mouths so prepped don't get jacket material scrapped off. </p><p></p><p>After sizing the fired case, running the case mouths over that spinning bore brush cleans virtually all of the powder residue out and keeps the case mouth inside nice and smooth.</p></blockquote><p></p>
[QUOTE="Bart B, post: 508249, member: 5302"] Those cutters will do the same when hand held. Though the machine may make the task faster. While the outside end of the tool does great for the outside of the case mouth, the inside one's not all that great no matter how it's used. It leaves too sharp an edge where the angled part mates with the inside of the case mouth. This means bullet jacket material still get scraped off when the bullet's seated. And removing jacket material tends to unbalance bullets; they don't shoot as accurate as those with no jacket material removed. Use a magnifying glass to inspect seated bullets at the case mouth and you'll see tiny peelings of copper shaved off the bullet right at the case mouth. I use an Easy-Out screw extractor tool turned clockwise to debur most of the inside edge after trimming a case to length. This makes a shallower angle than standard deburring tools such as those shown in your post. Then I run the case mouth over a bore brush spun by a drill press to smooth out and make the inside edge cleaner and rounder. Bullets seated in case mouths so prepped don't get jacket material scrapped off. After sizing the fired case, running the case mouths over that spinning bore brush cleans virtually all of the powder residue out and keeps the case mouth inside nice and smooth. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Deburring Machine!?!?
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