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Rifles, Reloading, Optics, Equipment
Gunsmithing
Do I need more freebore?
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<blockquote data-quote="VinceMule" data-source="post: 3015860" data-attributes="member: 122164"><p>MOAorbust, I shoot several cases with freebores intentionally designed that seat bullets like you have in the picture, and all of these barrels shoot tiny groups. One of the main issues in having the bullet down in the case is that it can take up room that could otherwise be used for powder. Many have found that very slight compaction of the powder is often an aid in keeping the Extreme Spread down in velocity variations. Others have found that seating the bullet right on top of the powder is magic when it comes to accuracy. These advanced reloaders keep their mouth shut on the internet.</p><p></p><p>For the ultimate in-target shooting, having the intersection of the boat tail and bullet shank be about .020 above the shoulder/neck intersection of the case is desired. As you can imagine, designing cartridges like this often leads to using a rifle as a single shot, not desirable for most. Also, Designing cartridges like this often leads to Magazine OAL issues.</p><p></p><p>I found it rare to have doughnuts in cases where the parent cases were NOT necked up or down in a forming process, but as a matter of habit, I monitor my cases for doughnuts as I described in my previous post.</p></blockquote><p></p>
[QUOTE="VinceMule, post: 3015860, member: 122164"] MOAorbust, I shoot several cases with freebores intentionally designed that seat bullets like you have in the picture, and all of these barrels shoot tiny groups. One of the main issues in having the bullet down in the case is that it can take up room that could otherwise be used for powder. Many have found that very slight compaction of the powder is often an aid in keeping the Extreme Spread down in velocity variations. Others have found that seating the bullet right on top of the powder is magic when it comes to accuracy. These advanced reloaders keep their mouth shut on the internet. For the ultimate in-target shooting, having the intersection of the boat tail and bullet shank be about .020 above the shoulder/neck intersection of the case is desired. As you can imagine, designing cartridges like this often leads to using a rifle as a single shot, not desirable for most. Also, Designing cartridges like this often leads to Magazine OAL issues. I found it rare to have doughnuts in cases where the parent cases were NOT necked up or down in a forming process, but as a matter of habit, I monitor my cases for doughnuts as I described in my previous post. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Do I need more freebore?
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