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Rifles, Reloading, Optics, Equipment
Gunsmithing
Thinking of buying a lathe, how hard is it to chamber a rifle?
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<blockquote data-quote="bamban" data-source="post: 2681415" data-attributes="member: 17722"><p>The benchrest crowd of old used the 11 degree crown, who knows they might have started it. When I shot benchrest in the 80s, I never paid attention to the machining aspects of the game.</p><p></p><p>Fast forward to todays benchrest shooters, almost all the guns I see on the line have straight 90. My brother's group and VFS guns both originally done by Borden have straight 90s. He bought those 10 years ago. Following in the way his barrels were finished, all the barrels I spun up for him since have all straight crowns. The same way I finished VFS barrels for a couple of benchrest shooters at our local club.</p><p></p><p>My brother's guns are glued, no test fitting there. Have to rely on print and Borden's old barrel for tenon dimensions. The other benchrest guys get 1 day service, can't keep their actions overnight. I am just a hobbyist, not in the business, no FFL. I can do AR barrels no problem.</p><p></p><p>For my friends I've done a lot of recessed target crowns. Some have straight, and others have chamfer when requested.</p><p></p><p>I've done over a hundred AR15 barrels, what I learned the straight crown with no chamfer when melonited they tend not to last as we expected. That is losing X count at 600 yards before reaching 5K rounds. We expected for the barrels to last at least 6K. Non-melonited button barrels last 2500-3000 for the top shooters. Meloniting makes the surface real hard that cheap file will just glide on it. With hardness there is a flipside - britlleness. The sharp edge of 90 unchamferred tend to chip off.</p><p></p><p>A particular melonited barrel with chamfered straight crown lasted 10741 rounds when I pulled the barrel for a buddy. His last 600 yard match was 198-8. The 8 came on the 20th shot.. victim of I-will-clean-this jitters. I pretty much coerced him to give up the barrel so he had a fresh barrel leading up to Camp Perry. His 600 went back to double digits X count.</p><p></p><p>I better get off the forum, I have 20 AR15 barrels to finish from unturned blanks for the TX JRs. Have to plug in for our sponsor, these are donated barrels by Shilen.. Buy Shilen.</p></blockquote><p></p>
[QUOTE="bamban, post: 2681415, member: 17722"] The benchrest crowd of old used the 11 degree crown, who knows they might have started it. When I shot benchrest in the 80s, I never paid attention to the machining aspects of the game. Fast forward to todays benchrest shooters, almost all the guns I see on the line have straight 90. My brother's group and VFS guns both originally done by Borden have straight 90s. He bought those 10 years ago. Following in the way his barrels were finished, all the barrels I spun up for him since have all straight crowns. The same way I finished VFS barrels for a couple of benchrest shooters at our local club. My brother's guns are glued, no test fitting there. Have to rely on print and Borden's old barrel for tenon dimensions. The other benchrest guys get 1 day service, can't keep their actions overnight. I am just a hobbyist, not in the business, no FFL. I can do AR barrels no problem. For my friends I've done a lot of recessed target crowns. Some have straight, and others have chamfer when requested. I've done over a hundred AR15 barrels, what I learned the straight crown with no chamfer when melonited they tend not to last as we expected. That is losing X count at 600 yards before reaching 5K rounds. We expected for the barrels to last at least 6K. Non-melonited button barrels last 2500-3000 for the top shooters. Meloniting makes the surface real hard that cheap file will just glide on it. With hardness there is a flipside - britlleness. The sharp edge of 90 unchamferred tend to chip off. A particular melonited barrel with chamfered straight crown lasted 10741 rounds when I pulled the barrel for a buddy. His last 600 yard match was 198-8. The 8 came on the 20th shot.. victim of I-will-clean-this jitters. I pretty much coerced him to give up the barrel so he had a fresh barrel leading up to Camp Perry. His 600 went back to double digits X count. I better get off the forum, I have 20 AR15 barrels to finish from unturned blanks for the TX JRs. Have to plug in for our sponsor, these are donated barrels by Shilen.. Buy Shilen. [/QUOTE]
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Thinking of buying a lathe, how hard is it to chamber a rifle?
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